18394479 has 16 divisors (see below), whose sum is σ = 27496800. Its totient is φ = 12152448.

The previous prime is 18394469. The next prime is 18394499. The reversal of 18394479 is 97449381.

It is not a de Polignac number, because 18394479 - 2⁴ = 18394463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18394429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37 + ... + 6065.

It is an arithmetic number, because the mean of its divisors is an integer number (1718550).

Almost surely, 2^18394479 is an apocalyptic number.

18394479 is a deficient number, since it is larger than the sum of its proper divisors (9102321).

18394479 is a wasteful number, since it uses less digits than its factorization.

18394479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6151 (or 6145 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 18394479 is about 4288.8785247428. The cubic root of 18394479 is about 263.9748168127.

The spelling of 18394479 in words is "eighteen million, three hundred ninety-four thousand, four hundred seventy-nine".