18054394 has 8 divisors (see below), whose sum is σ = 27102420. Its totient is φ = 9020256.

The previous prime is 18054371. The next prime is 18054401. The reversal of 18054394 is 49345081.

It can be written as a sum of positive squares in 2 ways, for example, as 16524225 + 1530169 = 4065^2 + 1237^2 .

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

It is a super-2 number, since 2×18054394² = 651922285414472, which contains 22 as substring.

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, 862 + ... + 6070.

Almost surely, 2^18054394 is an apocalyptic number.

18054394 is a deficient number, since it is larger than the sum of its proper divisors (9048026).

18054394 is a wasteful number, since it uses less digits than its factorization.

18054394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6944.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 18054394 is about 4249.0462459239. The cubic root of 18054394 is about 262.3378602640.

The spelling of 18054394 in words is "eighteen million, fifty-four thousand, three hundred ninety-four".