913809812356 has 27 divisors (see below), whose sum is σ = 1860282933957. Its totient is φ = 391627041120.

The previous prime is 913809812353. The next prime is 913809812359. The reversal of 913809812356 is 653218908319.

The square root of 913809812356 is 955934.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (913809812353) and next prime (913809812359).

It can be written as a sum of positive squares in only one way, i.e., 159413338756 + 754396473600 = 399266^2 + 868560^2 .

It is a junction number, because it is equal to n+sod(n) for n = 913809812297 and 913809812306.

It is not an unprimeable number, because it can be changed into a prime (913809812351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 13348936 + ... + 13417216.

Almost surely, 2^913809812356 is an apocalyptic number.

913809812356 is the 955934-th square number.

It is an amenable number.

913809812356 is an abundant number, since it is smaller than the sum of its proper divisors (946473121601).

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

913809812356 is an frugal number, since it uses more digits than its factorization.

913809812356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136580 (or 68290 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 55.

The spelling of 913809812356 in words is "nine hundred thirteen billion, eight hundred nine million, eight hundred twelve thousand, three hundred fifty-six".