1361915856 has 240 divisors, whose sum is σ = 4559819264. Its totient is φ = 385471872.

The previous prime is 1361915837. The next prime is 1361915879. The reversal of 1361915856 is 6585191631.

1361915856 is a `hidden beast` number, since 1 + 3 + 61 + 9 + 1 + 585 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4436055 + ... + 4436361.

Almost surely, 2^1361915856 is an apocalyptic number.

1361915856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1361915856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2279909632).

1361915856 is an abundant number, since it is smaller than the sum of its proper divisors (3197903408).

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

1361915856 is a wasteful number, since it uses less digits than its factorization.

1361915856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500 (or 482 counting only the distinct ones).

The product of its digits is 194400, while the sum is 45.

The square root of 1361915856 is about 36904.1441575333. The cubic root of 1361915856 is about 1108.4516615344.

The spelling of 1361915856 in words is "one billion, three hundred sixty-one million, nine hundred fifteen thousand, eight hundred fifty-six".