190844912164 has 27 divisors (see below), whose sum is σ = 337134724563. Its totient is φ = 94529081472.

The previous prime is 190844912123. The next prime is 190844912177. The reversal of 190844912164 is 461219448091.

The square root of 190844912164 is 436858.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 38713710564 + 152131201600 = 196758^2 + 390040^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 98728942 + ... + 98730874.

Almost surely, 2^190844912164 is an apocalyptic number.

190844912164 is the 436858-th square number.

It is an amenable number.

190844912164 is a deficient number, since it is larger than the sum of its proper divisors (146289812399).

190844912164 is an frugal number, since it uses more digits than its factorization.

190844912164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4096 (or 2048 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 49.

Multiplying 190844912164 by its sum of digits (49), we get a square (9351400696036 = 3058006²).

The spelling of 190844912164 in words is "one hundred ninety billion, eight hundred forty-four million, nine hundred twelve thousand, one hundred sixty-four".