1361810956 has 72 divisors (see below), whose sum is σ = 2773516032. Its totient is φ = 583413600.

The previous prime is 1361810951. The next prime is 1361810981. The reversal of 1361810956 is 6590181631.

It is not an unprimeable number, because it can be changed into a prime (1361810951) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 789511 + ... + 791233.

It is an arithmetic number, because the mean of its divisors is an integer number (38521056).

Almost surely, 2^1361810956 is an apocalyptic number.

It is an amenable number.

1361810956 is an abundant number, since it is smaller than the sum of its proper divisors (1411705076).

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

1361810956 is a wasteful number, since it uses less digits than its factorization.

1361810956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1843 (or 1830 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 1361810956 is about 36902.7228805680. The cubic root of 1361810956 is about 1108.4232017329.

The spelling of 1361810956 in words is "one billion, three hundred sixty-one million, eight hundred ten thousand, nine hundred fifty-six".