1261996362 has 60 divisors (see below), whose sum is σ = 3108298578. Its totient is φ = 382417200.

The previous prime is 1261996327. The next prime is 1261996423. The reversal of 1261996362 is 2636991621.

1261996362 is a `hidden beast` number, since 1 + 2 + 6 + 1 + 9 + 9 + 636 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 947962521 + 314033841 = 30789^2 + 17721^2 .

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 12589 + ... + 51792.

Almost surely, 2^1261996362 is an apocalyptic number.

1261996362 is an abundant number, since it is smaller than the sum of its proper divisors (1846302216).

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

1261996362 is a wasteful number, since it uses less digits than its factorization.

1261996362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64417 (or 64397 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 1261996362 is about 35524.5881327286. The cubic root of 1261996362 is about 1080.6524298607.

The spelling of 1261996362 in words is "one billion, two hundred sixty-one million, nine hundred ninety-six thousand, three hundred sixty-two".