19730764231 has 8 divisors (see below), whose sum is σ = 19912244000. Its totient is φ = 19550108160.

The previous prime is 19730764219. The next prime is 19730764237. The reversal of 19730764231 is 13246703791.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19730764231 is a prime.

It is a super-2 number, since 2×19730764231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19730764237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157746 + ... + 253663.

It is an arithmetic number, because the mean of its divisors is an integer number (2489030500).

Almost surely, 2^19730764231 is an apocalyptic number.

19730764231 is a deficient number, since it is larger than the sum of its proper divisors (181479769).

19730764231 is a wasteful number, since it uses less digits than its factorization.

19730764231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411849.

The product of its (nonzero) digits is 190512, while the sum is 43.

The spelling of 19730764231 in words is "nineteen billion, seven hundred thirty million, seven hundred sixty-four thousand, two hundred thirty-one".