18379268 has 6 divisors (see below), whose sum is σ = 32163726. Its totient is φ = 9189632.

The previous prime is 18379247. The next prime is 18379279. The reversal of 18379268 is 86297381.

It can be written as a sum of positive squares in only one way, i.e., 17572864 + 806404 = 4192^2 + 898^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2297405 + ... + 2297412.

It is an arithmetic number, because the mean of its divisors is an integer number (5360621).

Almost surely, 2^18379268 is an apocalyptic number.

It is an amenable number.

18379268 is a deficient number, since it is larger than the sum of its proper divisors (13784458).

18379268 is a wasteful number, since it uses less digits than its factorization.

18379268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4594821 (or 4594819 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 18379268 is about 4287.1048505956. The cubic root of 18379268 is about 263.9020335925.

The spelling of 18379268 in words is "eighteen million, three hundred seventy-nine thousand, two hundred sixty-eight".