18274697 has 8 divisors (see below), whose sum is σ = 21312000. Its totient is φ = 15663732.

The previous prime is 18274693. The next prime is 18274709. The reversal of 18274697 is 79647281.

It is not a de Polignac number, because 18274697 - 2² = 18274693 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18274693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26297 + ... + 26982.

It is an arithmetic number, because the mean of its divisors is an integer number (2664000).

Almost surely, 2^18274697 is an apocalyptic number.

It is an amenable number.

18274697 is a deficient number, since it is larger than the sum of its proper divisors (3037303).

18274697 is an frugal number, since it uses more digits than its factorization.

18274697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53300 (or 53286 counting only the distinct ones).

The product of its digits is 169344, while the sum is 44.

The square root of 18274697 is about 4274.8914606104. The cubic root of 18274697 is about 263.4005808422.

The spelling of 18274697 in words is "eighteen million, two hundred seventy-four thousand, six hundred ninety-seven".