19198211952 has 80 divisors (see below), whose sum is σ = 53479077120. Its totient is φ = 5914713600.

The previous prime is 19198211899. The next prime is 19198212001. The reversal of 19198211952 is 25911289191.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 219324 + ... + 294107.

It is an arithmetic number, because the mean of its divisors is an integer number (668488464).

Almost surely, 2^19198211952 is an apocalyptic number.

19198211952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19198211952 is an abundant number, since it is smaller than the sum of its proper divisors (34280865168).

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

19198211952 is a wasteful number, since it uses less digits than its factorization.

19198211952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513502 (or 513496 counting only the distinct ones).

The product of its digits is 116640, while the sum is 48.

The spelling of 19198211952 in words is "nineteen billion, one hundred ninety-eight million, two hundred eleven thousand, nine hundred fifty-two".