18013748 has 24 divisors (see below), whose sum is σ = 33321120. Its totient is φ = 8497440.

The previous prime is 18013747. The next prime is 18013763. The reversal of 18013748 is 84731081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18013741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31715 + ... + 32277.

It is an arithmetic number, because the mean of its divisors is an integer number (1388380).

Almost surely, 2^18013748 is an apocalyptic number.

It is an amenable number.

18013748 is a deficient number, since it is larger than the sum of its proper divisors (15307372).

18013748 is a wasteful number, since it uses less digits than its factorization.

18013748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007 (or 1005 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 18013748 is about 4244.2605952038. The cubic root of 18013748 is about 262.1408445757.

The spelling of 18013748 in words is "eighteen million, thirteen thousand, seven hundred forty-eight".