19938854046 has 32 divisors (see below), whose sum is σ = 40236134400. Its totient is φ = 6586807520.

The previous prime is 19938853969. The next prime is 19938854093. The reversal of 19938854046 is 64045883991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275935 + ... + 340613.

It is an arithmetic number, because the mean of its divisors is an integer number (1257379200).

Almost surely, 2^19938854046 is an apocalyptic number.

19938854046 is an abundant number, since it is smaller than the sum of its proper divisors (20297280354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19938854046 is a wasteful number, since it uses less digits than its factorization.

19938854046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65144.

The product of its (nonzero) digits is 7464960, while the sum is 57.

The spelling of 19938854046 in words is "nineteen billion, nine hundred thirty-eight million, eight hundred fifty-four thousand, forty-six".