1956297966 has 64 divisors (see below), whose sum is σ = 4740648960. Its totient is φ = 526279680.

The previous prime is 1956297949. The next prime is 1956297977. The reversal of 1956297966 is 6697926591.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 27870 + ... + 68478.

It is an arithmetic number, because the mean of its divisors is an integer number (74072640).

Almost surely, 2^1956297966 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1956297966, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2370324480).

1956297966 is an abundant number, since it is smaller than the sum of its proper divisors (2784350994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1956297966 is a wasteful number, since it uses less digits than its factorization.

1956297966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40689.

The product of its digits is 11022480, while the sum is 60.

The square root of 1956297966 is about 44230.0572687850. The cubic root of 1956297966 is about 1250.6765331895.

The spelling of 1956297966 in words is "one billion, nine hundred fifty-six million, two hundred ninety-seven thousand, nine hundred sixty-six".