18896897 has 2 divisors, whose sum is σ = 18896898. Its totient is φ = 18896896.

The previous prime is 18896833. The next prime is 18896921. The reversal of 18896897 is 79869881.

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., 16613776 + 2283121 = 4076^2 + 1511^2 .

It is a cyclic number.

It is not a de Polignac number, because 18896897 - 2⁶ = 18896833 is a prime.

It is not a weakly prime, because it can be changed into another prime (18896827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9448448 + 9448449.

It is an arithmetic number, because the mean of its divisors is an integer number (9448449).

Almost surely, 2^18896897 is an apocalyptic number.

It is an amenable number.

18896897 is a deficient number, since it is larger than the sum of its proper divisors (1).

18896897 is an equidigital number, since it uses as much as digits as its factorization.

18896897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 56.

The square root of 18896897 is about 4347.0561303024. The cubic root of 18896897 is about 266.3566221264.

The spelling of 18896897 in words is "eighteen million, eight hundred ninety-six thousand, eight hundred ninety-seven".