18113733 has 32 divisors (see below), whose sum is σ = 29721600. Its totient is φ = 10810800.

The previous prime is 18113699. The next prime is 18113737. The reversal of 18113733 is 33731181.

It is not a de Polignac number, because 18113733 - 2¹⁶ = 18048197 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 18113697 and 18113706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18113737) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20658 + ... + 21516.

It is an arithmetic number, because the mean of its divisors is an integer number (928800).

Almost surely, 2^18113733 is an apocalyptic number.

It is an amenable number.

18113733 is a deficient number, since it is larger than the sum of its proper divisors (11607867).

18113733 is a wasteful number, since it uses less digits than its factorization.

18113733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950 (or 944 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 18113733 is about 4256.0231437341. The cubic root of 18113733 is about 262.6249527566.

The spelling of 18113733 in words is "eighteen million, one hundred thirteen thousand, seven hundred thirty-three".