190138514568 has 64 divisors (see below), whose sum is σ = 503368032960. Its totient is φ = 59644164096.

The previous prime is 190138514563. The next prime is 190138514609. The reversal of 190138514568 is 865415831091.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 190138514568.

It is not an unprimeable number, because it can be changed into a prime (190138514561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4156396 + ... + 4201892.

It is an arithmetic number, because the mean of its divisors is an integer number (7865125515).

Almost surely, 2^190138514568 is an apocalyptic number.

It is an amenable number.

190138514568 is an abundant number, since it is smaller than the sum of its proper divisors (313229518392).

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

190138514568 is a wasteful number, since it uses less digits than its factorization.

190138514568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55766 (or 55762 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 51.

The spelling of 190138514568 in words is "one hundred ninety billion, one hundred thirty-eight million, five hundred fourteen thousand, five hundred sixty-eight".