18514739 has 4 divisors (see below), whose sum is σ = 18966360. Its totient is φ = 18063120.

The previous prime is 18514733. The next prime is 18514753. The reversal of 18514739 is 93741581.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93741581 = 757 ⋅123833.

It is a cyclic number.

It is not a de Polignac number, because 18514739 - 2¹⁶ = 18449203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18514733) 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 3 ways as a sum of consecutive naturals, for example, 225749 + ... + 225830.

It is an arithmetic number, because the mean of its divisors is an integer number (4741590).

Almost surely, 2^18514739 is an apocalyptic number.

18514739 is a deficient number, since it is larger than the sum of its proper divisors (451621).

18514739 is an equidigital number, since it uses as much as digits as its factorization.

18514739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451620.

The product of its digits is 30240, while the sum is 38.

The square root of 18514739 is about 4302.8756663422. The cubic root of 18514739 is about 264.5488419351.

The spelling of 18514739 in words is "eighteen million, five hundred fourteen thousand, seven hundred thirty-nine".