18113739 has 8 divisors (see below), whose sum is σ = 27601920. Its totient is φ = 10350696.

The previous prime is 18113737. The next prime is 18113743. The reversal of 18113739 is 93731181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18113739 - 2¹ = 18113737 is a prime.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431259 + ... + 431300.

It is an arithmetic number, because the mean of its divisors is an integer number (3450240).

Almost surely, 2^18113739 is an apocalyptic number.

18113739 is a deficient number, since it is larger than the sum of its proper divisors (9488181).

18113739 is an equidigital number, since it uses as much as digits as its factorization.

18113739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862569.

The product of its digits is 4536, while the sum is 33.

The square root of 18113739 is about 4256.0238486174. The cubic root of 18113739 is about 262.6249817540.

The spelling of 18113739 in words is "eighteen million, one hundred thirteen thousand, seven hundred thirty-nine".