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1020148037 = 1815636177
BaseRepresentation
bin111100110011100…
…011100101000101
32122002120220000122
4330303203211011
54042124214122
6245121151325
734165054346
oct7463434505
92562526018
101020148037
11483935357
1224578b545
13133472abc
14996b40cd
155e861142
hex3cce3945

1020148037 has 4 divisors (see below), whose sum is σ = 1025784396. Its totient is φ = 1014511680.

The previous prime is 1020148033. The next prime is 1020148043. The reversal of 1020148037 is 7308410201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7308410201 = 26332775697.

It can be written as a sum of positive squares in 2 ways, for example, as 89226916 + 930921121 = 9446^2 + 30511^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020148037 - 22 = 1020148033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020147997 and 1020148015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020148033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2817908 + ... + 2818269.

It is an arithmetic number, because the mean of its divisors is an integer number (256446099).

Almost surely, 21020148037 is an apocalyptic number.

It is an amenable number.

1020148037 is a deficient number, since it is larger than the sum of its proper divisors (5636359).

1020148037 is an equidigital number, since it uses as much as digits as its factorization.

1020148037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5636358.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 1020148037 is about 31939.7563703921. The cubic root of 1020148037 is about 1006.6714057031.

Adding to 1020148037 its reverse (7308410201), we get a palindrome (8328558238).

The spelling of 1020148037 in words is "one billion, twenty million, one hundred forty-eight thousand, thirty-seven".

Divisors: 1 181 5636177 1020148037