1979696971 has 24 divisors (see below), whose sum is σ = 2441715840. Its totient is φ = 1594881792.

The previous prime is 1979696947. The next prime is 1979696981. The reversal of 1979696971 is 1796969791.

It is a happy number.

It is not a de Polignac number, because 1979696971 - 2⁷ = 1979696843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1979696911) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 922726 + ... + 924868.

It is an arithmetic number, because the mean of its divisors is an integer number (101738160).

Almost surely, 2^1979696971 is an apocalyptic number.

1979696971 is a deficient number, since it is larger than the sum of its proper divisors (462018869).

1979696971 is a wasteful number, since it uses less digits than its factorization.

1979696971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3283 (or 3276 counting only the distinct ones).

The product of its digits is 11573604, while the sum is 64.

The square root of 1979696971 is about 44493.7857571144. The cubic root of 1979696971 is about 1255.6431724921.

The spelling of 1979696971 in words is "one billion, nine hundred seventy-nine million, six hundred ninety-six thousand, nine hundred seventy-one".