18672701 has 2 divisors, whose sum is σ = 18672702. Its totient is φ = 18672700.

The previous prime is 18672691. The next prime is 18672721. The reversal of 18672701 is 10727681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10407076 + 8265625 = 3226^2 + 2875^2 .

It is a cyclic number.

It is not a de Polignac number, because 18672701 - 2⁶ = 18672637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18672721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9336350 + 9336351.

It is an arithmetic number, because the mean of its divisors is an integer number (9336351).

Almost surely, 2^18672701 is an apocalyptic number.

It is an amenable number.

18672701 is a deficient number, since it is larger than the sum of its proper divisors (1).

18672701 is an equidigital number, since it uses as much as digits as its factorization.

18672701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 18672701 is about 4321.1920808962. The cubic root of 18672701 is about 265.2990619201.

The spelling of 18672701 in words is "eighteen million, six hundred seventy-two thousand, seven hundred one".