19894305376 has 48 divisors (see below), whose sum is σ = 44976375360. Its totient is φ = 8566922880.

The previous prime is 19894305349. The next prime is 19894305383. The reversal of 19894305376 is 67350349891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1480626 + ... + 1494001.

It is an arithmetic number, because the mean of its divisors is an integer number (937007820).

Almost surely, 2^19894305376 is an apocalyptic number.

19894305376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19894305376 is an abundant number, since it is smaller than the sum of its proper divisors (25082069984).

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

19894305376 is a wasteful number, since it uses less digits than its factorization.

19894305376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2974667 (or 2974659 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 55.

The spelling of 19894305376 in words is "nineteen billion, eight hundred ninety-four million, three hundred five thousand, three hundred seventy-six".