1979099125 has 8 divisors (see below), whose sum is σ = 2469915864. Its totient is φ = 1583279200.

The previous prime is 1979099041. The next prime is 1979099173. The reversal of 1979099125 is 5219909791.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 255936004 + 1723163121 = 15998^2 + 41511^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1979099125 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7916272 + ... + 7916521.

It is an arithmetic number, because the mean of its divisors is an integer number (308739483).

Almost surely, 2^1979099125 is an apocalyptic number.

It is an amenable number.

1979099125 is a deficient number, since it is larger than the sum of its proper divisors (490816739).

1979099125 is an equidigital number, since it uses as much as digits as its factorization.

1979099125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15832808 (or 15832798 counting only the distinct ones).

The product of its (nonzero) digits is 459270, while the sum is 52.

The square root of 1979099125 is about 44487.0669408537. The cubic root of 1979099125 is about 1255.5167631077.

The spelling of 1979099125 in words is "one billion, nine hundred seventy-nine million, ninety-nine thousand, one hundred twenty-five".