19150965840 has 80 divisors (see below), whose sum is σ = 59381306496. Its totient is φ = 5105779200.

The previous prime is 19150965833. The next prime is 19150965871. The reversal of 19150965840 is 4856905191.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is a self number, because there is not a number n which added to its sum of digits gives 19150965840.

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, 2025925 + ... + 2035355.

Almost surely, 2^19150965840 is an apocalyptic number.

19150965840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19150965840 is an abundant number, since it is smaller than the sum of its proper divisors (40230340656).

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

19150965840 is a wasteful number, since it uses less digits than its factorization.

19150965840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17908 (or 17902 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 48.

The spelling of 19150965840 in words is "nineteen billion, one hundred fifty million, nine hundred sixty-five thousand, eight hundred forty".