18364057 has 2 divisors, whose sum is σ = 18364058. Its totient is φ = 18364056.

The previous prime is 18364039. The next prime is 18364061. The reversal of 18364057 is 75046381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18156121 + 207936 = 4261^2 + 456^2 .

It is a cyclic number.

It is not a de Polignac number, because 18364057 - 2⁷ = 18363929 is a prime.

It is not a weakly prime, because it can be changed into another prime (18364037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9182028 + 9182029.

It is an arithmetic number, because the mean of its divisors is an integer number (9182029).

Almost surely, 2^18364057 is an apocalyptic number.

It is an amenable number.

18364057 is a deficient number, since it is larger than the sum of its proper divisors (1).

18364057 is an equidigital number, since it uses as much as digits as its factorization.

18364057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 18364057 is about 4285.3304423346. The cubic root of 18364057 is about 263.8292102034.

The spelling of 18364057 in words is "eighteen million, three hundred sixty-four thousand, fifty-seven".