18013374 has 16 divisors (see below), whose sum is σ = 40029840. Its totient is φ = 6004440.

The previous prime is 18013367. The next prime is 18013381. The reversal of 18013374 is 47331081.

It is an interprime number because it is at equal distance from previous prime (18013367) and next prime (18013381).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166737 + ... + 166844.

It is an arithmetic number, because the mean of its divisors is an integer number (2501865).

Almost surely, 2^18013374 is an apocalyptic number.

18013374 is an abundant number, since it is smaller than the sum of its proper divisors (22016466).

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

18013374 is a wasteful number, since it uses less digits than its factorization.

18013374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333592 (or 333586 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 18013374 is about 4244.2165354751. The cubic root of 18013374 is about 262.1390303807.

The spelling of 18013374 in words is "eighteen million, thirteen thousand, three hundred seventy-four".