19375998400 has 84 divisors (see below), whose sum is σ = 52011392040. Its totient is φ = 7045811200.

The previous prime is 19375998361. The next prime is 19375998401. The reversal of 19375998400 is 489957391.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19375998401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 532855 + ... + 568054.

Almost surely, 2^19375998400 is an apocalyptic number.

19375998400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19375998400 is an abundant number, since it is smaller than the sum of its proper divisors (32635393640).

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

19375998400 is a wasteful number, since it uses less digits than its factorization.

19375998400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100942 (or 1100927 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 55.

The spelling of 19375998400 in words is "nineteen billion, three hundred seventy-five million, nine hundred ninety-eight thousand, four hundred".