18078934 has 8 divisors (see below), whose sum is σ = 27372168. Its totient is φ = 8954880.

The previous prime is 18078911. The next prime is 18078947. The reversal of 18078934 is 43987081.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42027 + ... + 42454.

It is an arithmetic number, because the mean of its divisors is an integer number (3421521).

Almost surely, 2^18078934 is an apocalyptic number.

18078934 is a deficient number, since it is larger than the sum of its proper divisors (9293234).

18078934 is a wasteful number, since it uses less digits than its factorization.

18078934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84590.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 18078934 is about 4251.9329721904. The cubic root of 18078934 is about 262.4566652577.

The spelling of 18078934 in words is "eighteen million, seventy-eight thousand, nine hundred thirty-four".