18734613 has 16 divisors (see below), whose sum is σ = 25524480. Its totient is φ = 12220416.

The previous prime is 18734603. The next prime is 18734641. The reversal of 18734613 is 31643781.

It is not a de Polignac number, because 18734613 - 2⁶ = 18734549 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18734603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32181 + ... + 32757.

It is an arithmetic number, because the mean of its divisors is an integer number (1595280).

Almost surely, 2^18734613 is an apocalyptic number.

It is an amenable number.

18734613 is a deficient number, since it is larger than the sum of its proper divisors (6789867).

18734613 is a wasteful number, since it uses less digits than its factorization.

18734613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796.

The product of its digits is 12096, while the sum is 33.

The square root of 18734613 is about 4328.3499165386. The cubic root of 18734613 is about 265.5919507301.

The spelling of 18734613 in words is "eighteen million, seven hundred thirty-four thousand, six hundred thirteen".