981852580 has 12 divisors (see below), whose sum is σ = 2061890460. Its totient is φ = 392741024.

The previous prime is 981852577. The next prime is 981852581. The reversal of 981852580 is 85258189.

It can be written as a sum of positive squares in 2 ways, for example, as 625700196 + 356152384 = 25014^2 + 18872^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 981852580.

It is not an unprimeable number, because it can be changed into a prime (981852581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24546295 + ... + 24546334.

It is an arithmetic number, because the mean of its divisors is an integer number (171824205).

Almost surely, 2^981852580 is an apocalyptic number.

It is an amenable number.

981852580 is an abundant number, since it is smaller than the sum of its proper divisors (1080037880).

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

981852580 is a wasteful number, since it uses less digits than its factorization.

981852580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49092638 (or 49092636 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 46.

The square root of 981852580 is about 31334.5269630802. The cubic root of 981852580 is about 993.9138944639.

The spelling of 981852580 in words is "nine hundred eighty-one million, eight hundred fifty-two thousand, five hundred eighty".