18739074 has 16 divisors (see below), whose sum is σ = 37529280. Its totient is φ = 6237840.

The previous prime is 18739067. The next prime is 18739081. The reversal of 18739074 is 47093781.

It is an interprime number because it is at equal distance from previous prime (18739067) and next prime (18739081).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3987 + ... + 7305.

It is an arithmetic number, because the mean of its divisors is an integer number (2345580).

Almost surely, 2^18739074 is an apocalyptic number.

18739074 is an abundant number, since it is smaller than the sum of its proper divisors (18790206).

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

18739074 is a wasteful number, since it uses less digits than its factorization.

18739074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4265.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 18739074 is about 4328.8652092667. The cubic root of 18739074 is about 265.6130295690.

The spelling of 18739074 in words is "eighteen million, seven hundred thirty-nine thousand, seventy-four".