19157621034 has 16 divisors (see below), whose sum is σ = 38317154688. Its totient is φ = 6385554912.

The previous prime is 19157621029. The next prime is 19157621039. The reversal of 19157621034 is 43012675191.

It is an interprime number because it is at equal distance from previous prime (19157621029) and next prime (19157621039).

It is a junction number, because it is equal to n+sod(n) for n = 19157620983 and 19157621001.

It is not an unprimeable number, because it can be changed into a prime (19157621039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73039 + ... + 208925.

It is an arithmetic number, because the mean of its divisors is an integer number (2394822168).

Almost surely, 2^19157621034 is an apocalyptic number.

19157621034 is an abundant number, since it is smaller than the sum of its proper divisors (19159533654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19157621034 is a wasteful number, since it uses less digits than its factorization.

19157621034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159389.

The product of its (nonzero) digits is 45360, while the sum is 39.

The spelling of 19157621034 in words is "nineteen billion, one hundred fifty-seven million, six hundred twenty-one thousand, thirty-four".