195979465988 has 24 divisors (see below), whose sum is σ = 352278456600. Its totient is φ = 95329156608.

The previous prime is 195979465949. The next prime is 195979466021. The reversal of 195979465988 is 889564979591.

It can be written as a sum of positive squares in 4 ways, for example, as 11132782144 + 184846683844 = 105512^2 + 429938^2 .

It is a super-2 number, since 2×195979465988² (a number of 23 digits) contains 22 as substring.

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, 1134278 + ... + 1295586.

It is an arithmetic number, because the mean of its divisors is an integer number (14678269025).

Almost surely, 2^195979465988 is an apocalyptic number.

It is an amenable number.

195979465988 is a deficient number, since it is larger than the sum of its proper divisors (156298990612).

195979465988 is a wasteful number, since it uses less digits than its factorization.

195979465988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169559 (or 169557 counting only the distinct ones).

The product of its digits is 1763596800, while the sum is 80.

The spelling of 195979465988 in words is "one hundred ninety-five billion, nine hundred seventy-nine million, four hundred sixty-five thousand, nine hundred eighty-eight".