18794957 has 2 divisors, whose sum is σ = 18794958. Its totient is φ = 18794956.

The previous prime is 18794947. The next prime is 18794977. The reversal of 18794957 is 75949781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10666756 + 8128201 = 3266^2 + 2851^2 .

It is a cyclic number.

It is not a de Polignac number, because 18794957 - 2¹⁰ = 18793933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18794947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9397478 + 9397479.

It is an arithmetic number, because the mean of its divisors is an integer number (9397479).

Almost surely, 2^18794957 is an apocalyptic number.

It is an amenable number.

18794957 is a deficient number, since it is larger than the sum of its proper divisors (1).

18794957 is an equidigital number, since it uses as much as digits as its factorization.

18794957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 50.

The square root of 18794957 is about 4335.3150981215. The cubic root of 18794957 is about 265.8768014487.

The spelling of 18794957 in words is "eighteen million, seven hundred ninety-four thousand, nine hundred fifty-seven".