916812500 has 42 divisors (see below), whose sum is σ = 2005638390. Its totient is φ = 366700000.

The previous prime is 916812469. The next prime is 916812509. The reversal of 916812500 is 5218619.

It can be written as a sum of positive squares in 7 ways, for example, as 915304516 + 1507984 = 30254^2 + 1228^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (916812509) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 55166 + ... + 69834.

It is an arithmetic number, because the mean of its divisors is an integer number (47753295).

Almost surely, 2^916812500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 916812500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1002819195).

916812500 is an abundant number, since it is smaller than the sum of its proper divisors (1088825890).

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

916812500 is an equidigital number, since it uses as much as digits as its factorization.

916812500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14703 (or 14676 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 916812500 is about 30278.9118034318. The cubic root of 916812500 is about 971.4642921245.

The spelling of 916812500 in words is "nine hundred sixteen million, eight hundred twelve thousand, five hundred".