19613987234 has 8 divisors (see below), whose sum is σ = 30105189840. Its totient is φ = 9578923956.

The previous prime is 19613987227. The next prime is 19613987249. The reversal of 19613987234 is 43278931691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114034724 + ... + 114034895.

It is an arithmetic number, because the mean of its divisors is an integer number (3763148730).

Almost surely, 2^19613987234 is an apocalyptic number.

19613987234 is a deficient number, since it is larger than the sum of its proper divisors (10491202606).

19613987234 is a wasteful number, since it uses less digits than its factorization.

19613987234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228069664.

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

The spelling of 19613987234 in words is "nineteen billion, six hundred thirteen million, nine hundred eighty-seven thousand, two hundred thirty-four".