188904361 has 2 divisors, whose sum is σ = 188904362. Its totient is φ = 188904360.

The previous prime is 188904337. The next prime is 188904367. The reversal of 188904361 is 163409881.

188904361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186486336 + 2418025 = 13656^2 + 1555^2 .

It is a cyclic number.

It is not a de Polignac number, because 188904361 - 2⁵ = 188904329 is a prime.

It is not a weakly prime, because it can be changed into another prime (188904367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94452180 + 94452181.

It is an arithmetic number, because the mean of its divisors is an integer number (94452181).

Almost surely, 2^188904361 is an apocalyptic number.

It is an amenable number.

188904361 is a deficient number, since it is larger than the sum of its proper divisors (1).

188904361 is an equidigital number, since it uses as much as digits as its factorization.

188904361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 188904361 is about 13744.2482879203. The cubic root of 188904361 is about 573.7825391209.

The spelling of 188904361 in words is "one hundred eighty-eight million, nine hundred four thousand, three hundred sixty-one".