19423312156 has 12 divisors (see below), whose sum is σ = 33993940792. Its totient is φ = 9710757648.

The previous prime is 19423312151. The next prime is 19423312157. The reversal of 19423312156 is 65121332491.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19423312151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174735 + ... + 263398.

Almost surely, 2^19423312156 is an apocalyptic number.

It is an amenable number.

19423312156 is a deficient number, since it is larger than the sum of its proper divisors (14570628636).

19423312156 is a wasteful number, since it uses less digits than its factorization.

19423312156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449220 (or 449218 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The spelling of 19423312156 in words is "nineteen billion, four hundred twenty-three million, three hundred twelve thousand, one hundred fifty-six".