913507990290 has 768 divisors, whose sum is σ = 3081112473600. Its totient is φ = 191382912000.

The previous prime is 913507990289. The next prime is 913507990313. The reversal of 913507990290 is 92099705319.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

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 383 ways as a sum of consecutive naturals, for example, 1556231377 + ... + 1556231963.

It is an arithmetic number, because the mean of its divisors is an integer number (4011865200).

Almost surely, 2^913507990290 is an apocalyptic number.

913507990290 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 913507990290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1540556236800).

913507990290 is an abundant number, since it is smaller than the sum of its proper divisors (2167604483310).

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

913507990290 is a wasteful number, since it uses less digits than its factorization.

913507990290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828 (or 815 counting only the distinct ones).

The product of its (nonzero) digits is 1377810, while the sum is 54.

The spelling of 913507990290 in words is "nine hundred thirteen billion, five hundred seven million, nine hundred ninety thousand, two hundred ninety".