18364697 has 16 divisors (see below), whose sum is σ = 21000000. Its totient is φ = 15920064.

The previous prime is 18364693. The next prime is 18364711. The reversal of 18364697 is 79646381.

It is a cyclic number.

It is not a de Polignac number, because 18364697 - 2² = 18364693 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18364693) 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, 36554 + ... + 37052.

It is an arithmetic number, because the mean of its divisors is an integer number (1312500).

Almost surely, 2^18364697 is an apocalyptic number.

It is an amenable number.

18364697 is a deficient number, since it is larger than the sum of its proper divisors (2635303).

18364697 is a wasteful number, since it uses less digits than its factorization.

18364697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680.

The product of its digits is 217728, while the sum is 44.

The square root of 18364697 is about 4285.4051150387. The cubic root of 18364697 is about 263.8322750442.

The spelling of 18364697 in words is "eighteen million, three hundred sixty-four thousand, six hundred ninety-seven".