190138536 has 64 divisors (see below), whose sum is σ = 603619200. Its totient is φ = 54324864.

The previous prime is 190138519. The next prime is 190138537. The reversal of 190138536 is 635831091.

It is a happy number.

190138536 is a `hidden beast` number, since 1 + 90 + 1 + 38 + 536 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 190138536.

It is not an unprimeable number, because it can be changed into a prime (190138537) 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, 61365 + ... + 64388.

It is an arithmetic number, because the mean of its divisors is an integer number (9431550).

Almost surely, 2^190138536 is an apocalyptic number.

It is an amenable number.

190138536 is an abundant number, since it is smaller than the sum of its proper divisors (413480664).

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

190138536 is a wasteful number, since it uses less digits than its factorization.

190138536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125775 (or 125765 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 190138536 is about 13789.0730652934. The cubic root of 190138536 is about 575.0293983709.

The spelling of 190138536 in words is "one hundred ninety million, one hundred thirty-eight thousand, five hundred thirty-six".