18346868 has 6 divisors (see below), whose sum is σ = 32107026. Its totient is φ = 9173432.

The previous prime is 18346843. The next prime is 18346877. The reversal of 18346868 is 86864381.

It can be written as a sum of positive squares in only one way, i.e., 18215824 + 131044 = 4268^2 + 362^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2293355 + ... + 2293362.

It is an arithmetic number, because the mean of its divisors is an integer number (5351171).

Almost surely, 2^18346868 is an apocalyptic number.

It is an amenable number.

18346868 is a deficient number, since it is larger than the sum of its proper divisors (13760158).

18346868 is a wasteful number, since it uses less digits than its factorization.

18346868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4586721 (or 4586719 counting only the distinct ones).

The product of its digits is 221184, while the sum is 44.

The square root of 18346868 is about 4283.3244098480. The cubic root of 18346868 is about 263.7468686315.

The spelling of 18346868 in words is "eighteen million, three hundred forty-six thousand, eight hundred sixty-eight".