1979570697 has 16 divisors (see below), whose sum is σ = 2850532608. Its totient is φ = 1214737920.

The previous prime is 1979570683. The next prime is 1979570701. The reversal of 1979570697 is 7960759791.

It is not a de Polignac number, because 1979570697 - 2²⁰ = 1978522121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1979570697.

It is not an unprimeable number, because it can be changed into a prime (1979570657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58129 + ... + 85662.

It is an arithmetic number, because the mean of its divisors is an integer number (178158288).

Almost surely, 2^1979570697 is an apocalyptic number.

It is an amenable number.

1979570697 is a deficient number, since it is larger than the sum of its proper divisors (870961911).

1979570697 is a wasteful number, since it uses less digits than its factorization.

1979570697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144160.

The product of its (nonzero) digits is 7501410, while the sum is 60.

The square root of 1979570697 is about 44492.3667273387. The cubic root of 1979570697 is about 1255.6164750632.

The spelling of 1979570697 in words is "one billion, nine hundred seventy-nine million, five hundred seventy thousand, six hundred ninety-seven".