180479899 has 2 divisors, whose sum is σ = 180479900. Its totient is φ = 180479898.

The previous prime is 180479891. The next prime is 180479903. The reversal of 180479899 is 998974081.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 180479899 - 2³ = 180479891 is a prime.

It is not a weakly prime, because it can be changed into another prime (180479891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90239949 + 90239950.

It is an arithmetic number, because the mean of its divisors is an integer number (90239950).

Almost surely, 2^180479899 is an apocalyptic number.

180479899 is a deficient number, since it is larger than the sum of its proper divisors (1).

180479899 is an equidigital number, since it uses as much as digits as its factorization.

180479899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 55.

The square root of 180479899 is about 13434.2807399578. The cubic root of 180479899 is about 565.1229523318.

The spelling of 180479899 in words is "one hundred eighty million, four hundred seventy-nine thousand, eight hundred ninety-nine".