18401464 has 16 divisors (see below), whose sum is σ = 34733520. Its totient is φ = 9139200.

The previous prime is 18401459. The next prime is 18401473. The reversal of 18401464 is 46410481.

It is a super-2 number, since 2×18401464² = 677227754686592, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6409 + ... + 8824.

It is an arithmetic number, because the mean of its divisors is an integer number (2170845).

Almost surely, 2^18401464 is an apocalyptic number.

It is an amenable number.

18401464 is a deficient number, since it is larger than the sum of its proper divisors (16332056).

18401464 is a wasteful number, since it uses less digits than its factorization.

18401464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15390 (or 15386 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 18401464 is about 4289.6927628911. The cubic root of 18401464 is about 264.0082259451.

The spelling of 18401464 in words is "eighteen million, four hundred one thousand, four hundred sixty-four".