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19142868763 = 88672158889
BaseRepresentation
bin10001110101000000…
…001111111100011011
31211102002200111020101
4101311000033330123
5303201033300023
612443310040231
71245243462004
oct216500177433
954362614211
1019142868763
1181337176a7
123862aa9077
131a60c407a5
14cd85281ab
157708ab1ad
hex47500ff1b

19142868763 has 4 divisors (see below), whose sum is σ = 19145036520. Its totient is φ = 19140701008.

The previous prime is 19142868749. The next prime is 19142868769. The reversal of 19142868763 is 36786824191.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19142868763 - 213 = 19142860571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19142868769) 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, 1070578 + ... + 1088311.

It is an arithmetic number, because the mean of its divisors is an integer number (4786259130).

Almost surely, 219142868763 is an apocalyptic number.

19142868763 is a deficient number, since it is larger than the sum of its proper divisors (2167757).

19142868763 is an equidigital number, since it uses as much as digits as its factorization.

19142868763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2167756.

The product of its digits is 3483648, while the sum is 55.

The spelling of 19142868763 in words is "nineteen billion, one hundred forty-two million, eight hundred sixty-eight thousand, seven hundred sixty-three".

Divisors: 1 8867 2158889 19142868763