188136049 has 2 divisors, whose sum is σ = 188136050. Its totient is φ = 188136048.

The previous prime is 188136041. The next prime is 188136077. The reversal of 188136049 is 940631881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132365025 + 55771024 = 11505^2 + 7468^2 .

It is a cyclic number.

It is not a de Polignac number, because 188136049 - 2³ = 188136041 is a prime.

It is not a weakly prime, because it can be changed into another prime (188136041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94068024 + 94068025.

It is an arithmetic number, because the mean of its divisors is an integer number (94068025).

Almost surely, 2^188136049 is an apocalyptic number.

It is an amenable number.

188136049 is a deficient number, since it is larger than the sum of its proper divisors (1).

188136049 is an equidigital number, since it uses as much as digits as its factorization.

188136049 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 188136049 is about 13716.2695001228. The cubic root of 188136049 is about 573.0035858117.

The spelling of 188136049 in words is "one hundred eighty-eight million, one hundred thirty-six thousand, forty-nine".