19157192518 has 16 divisors (see below), whose sum is σ = 29467224864. Its totient is φ = 9335269440.

The previous prime is 19157192507. The next prime is 19157192533. The reversal of 19157192518 is 81529175191.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41505 + ... + 200092.

It is an arithmetic number, because the mean of its divisors is an integer number (1841701554).

Almost surely, 2^19157192518 is an apocalyptic number.

19157192518 is a deficient number, since it is larger than the sum of its proper divisors (10310032346).

19157192518 is a wasteful number, since it uses less digits than its factorization.

19157192518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242607.

The product of its digits is 226800, while the sum is 49.

It can be divided in two parts, 191571 and 92518, that added together give a square (284089 = 533²).

The spelling of 19157192518 in words is "nineteen billion, one hundred fifty-seven million, one hundred ninety-two thousand, five hundred eighteen".