19150137894 has 64 divisors (see below), whose sum is σ = 39731912640. Its totient is φ = 6149038080.

The previous prime is 19150137863. The next prime is 19150137901. The reversal of 19150137894 is 49873105191.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15581272 + ... + 15582500.

It is an arithmetic number, because the mean of its divisors is an integer number (620811135).

Almost surely, 2^19150137894 is an apocalyptic number.

19150137894 is an abundant number, since it is smaller than the sum of its proper divisors (20581774746).

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

19150137894 is a wasteful number, since it uses less digits than its factorization.

19150137894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2025.

The product of its (nonzero) digits is 272160, while the sum is 48.

The spelling of 19150137894 in words is "nineteen billion, one hundred fifty million, one hundred thirty-seven thousand, eight hundred ninety-four".