2152499979 has 12 divisors (see below), whose sum is σ = 3338571624. Its totient is φ = 1229999904.

The previous prime is 2152499969. The next prime is 2152500019. The reversal of 2152499979 is 9799942512.

It is not a de Polignac number, because 2152499979 - 2⁷ = 2152499851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2152499939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7321282 + ... + 7321575.

It is an arithmetic number, because the mean of its divisors is an integer number (278214302).

Almost surely, 2^2152499979 is an apocalyptic number.

2152499979 is a deficient number, since it is larger than the sum of its proper divisors (1186071645).

2152499979 is a wasteful number, since it uses less digits than its factorization.

2152499979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14642874 (or 14642867 counting only the distinct ones).

The product of its digits is 3674160, while the sum is 57.

The square root of 2152499979 is about 46395.0426123309. The cubic root of 2152499979 is about 1291.1629396327.

The spelling of 2152499979 in words is "two billion, one hundred fifty-two million, four hundred ninety-nine thousand, nine hundred seventy-nine".