18616077 has 6 divisors (see below), whose sum is σ = 26889902. Its totient is φ = 12410712.

The previous prime is 18616063. The next prime is 18616109. The reversal of 18616077 is 77061681.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17816841 + 799236 = 4221^2 + 894^2 .

It is not a de Polignac number, because 18616077 - 2⁴ = 18616061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18616007) 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 in 5 ways as a sum of consecutive naturals, for example, 1034218 + ... + 1034235.

Almost surely, 2^18616077 is an apocalyptic number.

It is an amenable number.

18616077 is a deficient number, since it is larger than the sum of its proper divisors (8273825).

18616077 is a wasteful number, since it uses less digits than its factorization.

18616077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2068459 (or 2068456 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 18616077 is about 4314.6352105363. The cubic root of 18616077 is about 265.0306218322.

The spelling of 18616077 in words is "eighteen million, six hundred sixteen thousand, seventy-seven".