1956681336 has 16 divisors (see below), whose sum is σ = 4891703400. Its totient is φ = 652227104.

The previous prime is 1956681271. The next prime is 1956681341. The reversal of 1956681336 is 6331866591.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40764171 + ... + 40764218.

Almost surely, 2^1956681336 is an apocalyptic number.

It is an amenable number.

1956681336 is an abundant number, since it is smaller than the sum of its proper divisors (2935022064).

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

1956681336 is a wasteful number, since it uses less digits than its factorization.

1956681336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81528398 (or 81528394 counting only the distinct ones).

The product of its digits is 699840, while the sum is 48.

The square root of 1956681336 is about 44234.3908740699. The cubic root of 1956681336 is about 1250.7582249962.

The spelling of 1956681336 in words is "one billion, nine hundred fifty-six million, six hundred eighty-one thousand, three hundred thirty-six".