1956961396 has 12 divisors (see below), whose sum is σ = 3688119652. Its totient is φ = 903212928.

The previous prime is 1956961387. The next prime is 1956961421. The reversal of 1956961396 is 6931696591.

It can be written as a sum of positive squares in 2 ways, for example, as 374035600 + 1582925796 = 19340^2 + 39786^2 .

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, 18816885 + ... + 18816988.

Almost surely, 2^1956961396 is an apocalyptic number.

It is an amenable number.

1956961396 is a deficient number, since it is larger than the sum of its proper divisors (1731158256).

1956961396 is a wasteful number, since it uses less digits than its factorization.

1956961396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37633890 (or 37633888 counting only the distinct ones).

The product of its digits is 2361960, while the sum is 55.

The square root of 1956961396 is about 44237.5563972514. The cubic root of 1956961396 is about 1250.8178958670.

The spelling of 1956961396 in words is "one billion, nine hundred fifty-six million, nine hundred sixty-one thousand, three hundred ninety-six".