18232077 has 16 divisors (see below), whose sum is σ = 26703360. Its totient is φ = 11013552.

The previous prime is 18232073. The next prime is 18232079. The reversal of 18232077 is 77023281.

It is not a de Polignac number, because 18232077 - 2² = 18232073 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18232073) 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 15 ways as a sum of consecutive naturals, for example, 5643 + ... + 8264.

It is an arithmetic number, because the mean of its divisors is an integer number (1668960).

Almost surely, 2^18232077 is an apocalyptic number.

It is an amenable number.

18232077 is a deficient number, since it is larger than the sum of its proper divisors (8471283).

18232077 is a wasteful number, since it uses less digits than its factorization.

18232077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13952.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 18232077 is about 4269.9036288891. The cubic root of 18232077 is about 263.1956550328.

The spelling of 18232077 in words is "eighteen million, two hundred thirty-two thousand, seventy-seven".