1979597456 has 10 divisors (see below), whose sum is σ = 3835470102. Its totient is φ = 989798720.

The previous prime is 1979597401. The next prime is 1979597471. The reversal of 1979597456 is 6547959791.

It can be written as a sum of positive squares in only one way, i.e., 1964262400 + 15335056 = 44320^2 + 3916^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61862405 + ... + 61862436.

Almost surely, 2^1979597456 is an apocalyptic number.

1979597456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1979597456 is a deficient number, since it is larger than the sum of its proper divisors (1855872646).

1979597456 is a wasteful number, since it uses less digits than its factorization.

1979597456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123724849 (or 123724843 counting only the distinct ones).

The product of its digits is 21432600, while the sum is 62.

The square root of 1979597456 is about 44492.6674408267. The cubic root of 1979597456 is about 1255.6221326687.

The spelling of 1979597456 in words is "one billion, nine hundred seventy-nine million, five hundred ninety-seven thousand, four hundred fifty-six".