2398180491 has 144 divisors (see below), whose sum is σ = 4507176960. Its totient is φ = 1220123520.

The previous prime is 2398180489. The next prime is 2398180523. The reversal of 2398180491 is 1940818932.

2398180491 is a `hidden beast` number, since 2 + 3 + 9 + 81 + 80 + 491 = 666.

2398180491 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2398180491 - 2¹ = 2398180489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2398180471) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 9118426 + ... + 9118688.

It is an arithmetic number, because the mean of its divisors is an integer number (31299840).

Almost surely, 2^2398180491 is an apocalyptic number.

2398180491 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2398180491 is a deficient number, since it is larger than the sum of its proper divisors (2108996469).

2398180491 is a wasteful number, since it uses less digits than its factorization.

2398180491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366 (or 356 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 2398180491 is about 48971.2210486935. The cubic root of 2398180491 is about 1338.5274703817.

The spelling of 2398180491 in words is "two billion, three hundred ninety-eight million, one hundred eighty thousand, four hundred ninety-one".