190644534 has 12 divisors (see below), whose sum is σ = 413063196. Its totient is φ = 63548172.

The previous prime is 190644523. The next prime is 190644557. The reversal of 190644534 is 435446091.

190644534 is a `hidden beast` number, since 1 + 9 + 0 + 644 + 5 + 3 + 4 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 5295664 + ... + 5295699.

It is an arithmetic number, because the mean of its divisors is an integer number (34421933).

Almost surely, 2^190644534 is an apocalyptic number.

190644534 is an abundant number, since it is smaller than the sum of its proper divisors (222418662).

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

190644534 is a wasteful number, since it uses less digits than its factorization.

190644534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10591371 (or 10591368 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 190644534 is about 13807.4086634676. The cubic root of 190644534 is about 575.5390373034.

The spelling of 190644534 in words is "one hundred ninety million, six hundred forty-four thousand, five hundred thirty-four".