19440929400 has 96 divisors (see below), whose sum is σ = 62887224960. Its totient is φ = 4958842240.

The previous prime is 19440929393. The next prime is 19440929413. The reversal of 19440929400 is 492904491.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 690582 + ... + 718181.

It is an arithmetic number, because the mean of its divisors is an integer number (655075260).

Almost surely, 2^19440929400 is an apocalyptic number.

19440929400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19440929400 is an abundant number, since it is smaller than the sum of its proper divisors (43446295560).

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

19440929400 is a wasteful number, since it uses less digits than its factorization.

19440929400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1408805 (or 1408796 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The spelling of 19440929400 in words is "nineteen billion, four hundred forty million, nine hundred twenty-nine thousand, four hundred".