18976957 has 2 divisors, whose sum is σ = 18976958. Its totient is φ = 18976956.

The previous prime is 18976943. The next prime is 18976961. The reversal of 18976957 is 75967981.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18156121 + 820836 = 4261^2 + 906^2 .

It is a cyclic number.

It is not a de Polignac number, because 18976957 - 2¹⁹ = 18452669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18976157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9488478 + 9488479.

It is an arithmetic number, because the mean of its divisors is an integer number (9488479).

Almost surely, 2^18976957 is an apocalyptic number.

It is an amenable number.

18976957 is a deficient number, since it is larger than the sum of its proper divisors (1).

18976957 is an equidigital number, since it uses as much as digits as its factorization.

18976957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 952560, while the sum is 52.

The square root of 18976957 is about 4356.2549282612. The cubic root of 18976957 is about 266.7322475857.

The spelling of 18976957 in words is "eighteen million, nine hundred seventy-six thousand, nine hundred fifty-seven".