18246916 has 48 divisors (see below), whose sum is σ = 36892800. Its totient is φ = 7838208.

The previous prime is 18246913. The next prime is 18246919. The reversal of 18246916 is 61964281.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18246913) and next prime (18246919).

It is a super-2 number, since 2×18246916² = 665899887022112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18246913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37225 + ... + 37711.

It is an arithmetic number, because the mean of its divisors is an integer number (768600).

Almost surely, 2^18246916 is an apocalyptic number.

It is an amenable number.

18246916 is an abundant number, since it is smaller than the sum of its proper divisors (18645884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18246916 is a wasteful number, since it uses less digits than its factorization.

18246916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556 (or 554 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 18246916 is about 4271.6409025104. The cubic root of 18246916 is about 263.2670402299.

The spelling of 18246916 in words is "eighteen million, two hundred forty-six thousand, nine hundred sixteen".