18077077 has 2 divisors, whose sum is σ = 18077078. Its totient is φ = 18077076.

The previous prime is 18077051. The next prime is 18077099. The reversal of 18077077 is 77077081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16966161 + 1110916 = 4119^2 + 1054^2 .

It is a cyclic number.

It is not a de Polignac number, because 18077077 - 2¹⁵ = 18044309 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18077027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9038538 + 9038539.

It is an arithmetic number, because the mean of its divisors is an integer number (9038539).

Almost surely, 2^18077077 is an apocalyptic number.

It is an amenable number.

18077077 is a deficient number, since it is larger than the sum of its proper divisors (1).

18077077 is an equidigital number, since it uses as much as digits as its factorization.

18077077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19208, while the sum is 37.

The square root of 18077077 is about 4251.7145953133. The cubic root of 18077077 is about 262.4476787633.

The spelling of 18077077 in words is "eighteen million, seventy-seven thousand, seventy-seven".