2389978490 has 64 divisors (see below), whose sum is σ = 4656268800. Its totient is φ = 879922176.

The previous prime is 2389978483. The next prime is 2389978523. The reversal of 2389978490 is 948799832.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 2396672 + ... + 2397668.

It is an arithmetic number, because the mean of its divisors is an integer number (72754200).

Almost surely, 2^2389978490 is an apocalyptic number.

2389978490 is a deficient number, since it is larger than the sum of its proper divisors (2266290310).

2389978490 is a wasteful number, since it uses less digits than its factorization.

2389978490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319.

The product of its (nonzero) digits is 7838208, while the sum is 59.

The square root of 2389978490 is about 48887.4062515082. The cubic root of 2389978490 is about 1336.9997644846. Note that the first 3 decimals are identical.

The spelling of 2389978490 in words is "two billion, three hundred eighty-nine million, nine hundred seventy-eight thousand, four hundred ninety".