1956846997 has 6 divisors (see below), whose sum is σ = 2276332278. Its totient is φ = 1677297384.

The previous prime is 1956846961. The next prime is 1956847001. The reversal of 1956846997 is 7996486591.

It can be written as a sum of positive squares in only one way, i.e., 1821497041 + 135349956 = 42679^2 + 11634^2 .

It is not a de Polignac number, because 1956846997 - 2⁷ = 1956846869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1956846797) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19967778 + ... + 19967875.

It is an arithmetic number, because the mean of its divisors is an integer number (379388713).

Almost surely, 2^1956846997 is an apocalyptic number.

It is an amenable number.

1956846997 is a deficient number, since it is larger than the sum of its proper divisors (319485281).

1956846997 is an equidigital number, since it uses as much as digits as its factorization.

1956846997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39935667 (or 39935660 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 64.

The square root of 1956846997 is about 44236.2633706781. The cubic root of 1956846997 is about 1250.7935221781.

The spelling of 1956846997 in words is "one billion, nine hundred fifty-six million, eight hundred forty-six thousand, nine hundred ninety-seven".