1959972697 has 8 divisors (see below), whose sum is σ = 1975276800. Its totient is φ = 1944686064.

The previous prime is 1959972661. The next prime is 1959972713. The reversal of 1959972697 is 7962799591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1959972697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1959972617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303579 + ... + 309967.

It is an arithmetic number, because the mean of its divisors is an integer number (246909600).

Almost surely, 2^1959972697 is an apocalyptic number.

It is an amenable number.

1959972697 is a deficient number, since it is larger than the sum of its proper divisors (15304103).

1959972697 is a wasteful number, since it uses less digits than its factorization.

1959972697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8735.

The product of its digits is 19289340, while the sum is 64.

The square root of 1959972697 is about 44271.5788853300. The cubic root of 1959972697 is about 1251.4591380967.

The spelling of 1959972697 in words is "one billion, nine hundred fifty-nine million, nine hundred seventy-two thousand, six hundred ninety-seven".