18955297 has 2 divisors, whose sum is σ = 18955298. Its totient is φ = 18955296.

The previous prime is 18955283. The next prime is 18955301. The reversal of 18955297 is 79255981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9979281 + 8976016 = 3159^2 + 2996^2 .

It is a cyclic number.

It is not a de Polignac number, because 18955297 - 2⁷ = 18955169 is a prime.

It is not a weakly prime, because it can be changed into another prime (18955207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9477648 + 9477649.

It is an arithmetic number, because the mean of its divisors is an integer number (9477649).

Almost surely, 2^18955297 is an apocalyptic number.

It is an amenable number.

18955297 is a deficient number, since it is larger than the sum of its proper divisors (1).

18955297 is an equidigital number, since it uses as much as digits as its factorization.

18955297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 46.

The square root of 18955297 is about 4353.7681380616. The cubic root of 18955297 is about 266.6307276219.

The spelling of 18955297 in words is "eighteen million, nine hundred fifty-five thousand, two hundred ninety-seven".