18739716 has 24 divisors (see below), whose sum is σ = 44130240. Its totient is φ = 6188832.

The previous prime is 18739697. The next prime is 18739727. The reversal of 18739716 is 61793781.

It is an unprimeable number.

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, 5856 + ... + 8471.

It is an arithmetic number, because the mean of its divisors is an integer number (1838760).

Almost surely, 2^18739716 is an apocalyptic number.

It is an amenable number.

18739716 is an abundant number, since it is smaller than the sum of its proper divisors (25390524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18739716 is a wasteful number, since it uses less digits than its factorization.

18739716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14443 (or 14441 counting only the distinct ones).

The product of its digits is 63504, while the sum is 42.

The square root of 18739716 is about 4328.9393620147. The cubic root of 18739716 is about 265.6160628319.

It can be divided in two parts, 187 and 39716, that added together give a triangular number (39903 = T₂₈₂).

The spelling of 18739716 in words is "eighteen million, seven hundred thirty-nine thousand, seven hundred sixteen".