1979207136 has 60 divisors (see below), whose sum is σ = 5820800832. Its totient is φ = 659734848.

The previous prime is 1979207123. The next prime is 1979207213. The reversal of 1979207136 is 6317029791.

It is a junction number, because it is equal to n+sod(n) for n = 1979207091 and 1979207100.

It is a congruent number.

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 9 ways as a sum of consecutive naturals, for example, 379200 + ... + 384383.

Almost surely, 2^1979207136 is an apocalyptic number.

1979207136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1979207136 is an abundant number, since it is smaller than the sum of its proper divisors (3841593696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1979207136 is an equidigital number, since it uses as much as digits as its factorization.

1979207136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763605 (or 763588 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 45.

The square root of 1979207136 is about 44488.2808838463. The cubic root of 1979207136 is about 1255.5396029868.

The spelling of 1979207136 in words is "one billion, nine hundred seventy-nine million, two hundred seven thousand, one hundred thirty-six".