19431995942 has 4 divisors (see below), whose sum is σ = 29147993916. Its totient is φ = 9715997970.

The previous prime is 19431995929. The next prime is 19431995959. The reversal of 19431995942 is 24959913491.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4857998984 + ... + 4857998987.

It is an arithmetic number, because the mean of its divisors is an integer number (7286998479).

Almost surely, 2^19431995942 is an apocalyptic number.

19431995942 is a deficient number, since it is larger than the sum of its proper divisors (9715997974).

19431995942 is an equidigital number, since it uses as much as digits as its factorization.

19431995942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9715997973.

The product of its digits is 3149280, while the sum is 56.

The spelling of 19431995942 in words is "nineteen billion, four hundred thirty-one million, nine hundred ninety-five thousand, nine hundred forty-two".