19612738934 has 16 divisors (see below), whose sum is σ = 30270976560. Its totient is φ = 9526077600.

The previous prime is 19612738903. The next prime is 19612738973. The reversal of 19612738934 is 43983721691.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Curzon number.

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, 905264 + ... + 926675.

It is an arithmetic number, because the mean of its divisors is an integer number (1891936035).

Almost surely, 2^19612738934 is an apocalyptic number.

19612738934 is a deficient number, since it is larger than the sum of its proper divisors (10658237626).

19612738934 is a wasteful number, since it uses less digits than its factorization.

19612738934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832095.

The product of its digits is 1959552, while the sum is 53.

The spelling of 19612738934 in words is "nineteen billion, six hundred twelve million, seven hundred thirty-eight thousand, nine hundred thirty-four".