18332077 has 2 divisors, whose sum is σ = 18332078. Its totient is φ = 18332076.

The previous prime is 18332063. The next prime is 18332099. The reversal of 18332077 is 77023381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17189316 + 1142761 = 4146^2 + 1069^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18332077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18332047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9166038 + 9166039.

It is an arithmetic number, because the mean of its divisors is an integer number (9166039).

Almost surely, 2^18332077 is an apocalyptic number.

It is an amenable number.

18332077 is a deficient number, since it is larger than the sum of its proper divisors (1).

18332077 is an equidigital number, since it uses as much as digits as its factorization.

18332077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 18332077 is about 4281.5974822489. The cubic root of 18332077 is about 263.6759731752.

The spelling of 18332077 in words is "eighteen million, three hundred thirty-two thousand, seventy-seven".