18046416 has 20 divisors (see below), whose sum is σ = 46620032. Its totient is φ = 6015456.

The previous prime is 18046411. The next prime is 18046477. The reversal of 18046416 is 61464081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18046411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187936 + ... + 188031.

Almost surely, 2^18046416 is an apocalyptic number.

18046416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18046416 is an abundant number, since it is smaller than the sum of its proper divisors (28573616).

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

18046416 is a wasteful number, since it uses less digits than its factorization.

18046416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375978 (or 375972 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 18046416 is about 4248.1073432765. The cubic root of 18046416 is about 262.2992133506.

The spelling of 18046416 in words is "eighteen million, forty-six thousand, four hundred sixteen".