18671701 has 2 divisors, whose sum is σ = 18671702. Its totient is φ = 18671700.

The previous prime is 18671683. The next prime is 18671707. The reversal of 18671701 is 10717681.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18447025 + 224676 = 4295^2 + 474^2 .

It is a cyclic number.

It is not a de Polignac number, because 18671701 - 2¹¹ = 18669653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18671707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9335850 + 9335851.

It is an arithmetic number, because the mean of its divisors is an integer number (9335851).

Almost surely, 2^18671701 is an apocalyptic number.

It is an amenable number.

18671701 is a deficient number, since it is larger than the sum of its proper divisors (1).

18671701 is an equidigital number, since it uses as much as digits as its factorization.

18671701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 31.

The square root of 18671701 is about 4321.0763705355. The cubic root of 18671701 is about 265.2943258833.

The spelling of 18671701 in words is "eighteen million, six hundred seventy-one thousand, seven hundred one".