19931264902 has 8 divisors (see below), whose sum is σ = 30533001696. Its totient is φ = 9753597672.

The previous prime is 19931264861. The next prime is 19931264921. The reversal of 19931264902 is 20946213991.

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

It is a congruent 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, 106017273 + ... + 106017460.

It is an arithmetic number, because the mean of its divisors is an integer number (3816625212).

Almost surely, 2^19931264902 is an apocalyptic number.

19931264902 is a deficient number, since it is larger than the sum of its proper divisors (10601736794).

19931264902 is a wasteful number, since it uses less digits than its factorization.

19931264902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212034782.

The product of its (nonzero) digits is 209952, while the sum is 46.

The spelling of 19931264902 in words is "nineteen billion, nine hundred thirty-one million, two hundred sixty-four thousand, nine hundred two".