2398180891 has 2 divisors, whose sum is σ = 2398180892. Its totient is φ = 2398180890.

The previous prime is 2398180877. The next prime is 2398180909. The reversal of 2398180891 is 1980818932.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2398180891 - 2²⁹ = 1861309979 is a prime.

It is not a weakly prime, because it can be changed into another prime (2398180591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1199090445 + 1199090446.

It is an arithmetic number, because the mean of its divisors is an integer number (1199090446).

Almost surely, 2^2398180891 is an apocalyptic number.

2398180891 is a deficient number, since it is larger than the sum of its proper divisors (1).

2398180891 is an equidigital number, since it uses as much as digits as its factorization.

2398180891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 49.

The square root of 2398180891 is about 48971.2251327246. The cubic root of 2398180891 is about 1338.5275448008.

The spelling of 2398180891 in words is "two billion, three hundred ninety-eight million, one hundred eighty thousand, eight hundred ninety-one".