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148723082789 = 397374617337
BaseRepresentation
bin1000101010000010010…
…1100010011000100101
3112012212202201101202112
42022200211202120211
54414041102122124
6152153351450405
713513332226361
oct2124045423045
9465782641675
10148723082789
1158089337376
12249a7086a05
1311041b66b48
1472abd5c2a1
153d0694d90e
hex22a0962625

148723082789 has 4 divisors (see below), whose sum is σ = 149097700524. Its totient is φ = 148348465056.

The previous prime is 148723082741. The next prime is 148723082801. The reversal of 148723082789 is 987280327841.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 987280327841 = 3131847752511.

It can be written as a sum of positive squares in 2 ways, for example, as 100330562500 + 48392520289 = 316750^2 + 219983^2 .

It is a cyclic number.

It is not a de Polignac number, because 148723082789 - 28 = 148723082533 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148723082689) 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, 187308272 + ... + 187309065.

It is an arithmetic number, because the mean of its divisors is an integer number (37274425131).

Almost surely, 2148723082789 is an apocalyptic number.

It is an amenable number.

148723082789 is a deficient number, since it is larger than the sum of its proper divisors (374617735).

148723082789 is an equidigital number, since it uses as much as digits as its factorization.

148723082789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374617734.

The product of its (nonzero) digits is 10838016, while the sum is 59.

The spelling of 148723082789 in words is "one hundred forty-eight billion, seven hundred twenty-three million, eighty-two thousand, seven hundred eighty-nine".

Divisors: 1 397 374617337 148723082789