986118840 has 128 divisors (see below), whose sum is σ = 3756672000. Its totient is φ = 225396864.

The previous prime is 986118751. The next prime is 986118869. The reversal of 986118840 is 48811689.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57660 + ... + 72779.

It is an arithmetic number, because the mean of its divisors is an integer number (29349000).

Almost surely, 2^986118840 is an apocalyptic number.

986118840 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

986118840 is an abundant number, since it is smaller than the sum of its proper divisors (2770553160).

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

986118840 is a wasteful number, since it uses less digits than its factorization.

986118840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130466 (or 130456 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The square root of 986118840 is about 31402.5291975025. The cubic root of 986118840 is about 995.3513703947.

The spelling of 986118840 in words is "nine hundred eighty-six million, one hundred eighteen thousand, eight hundred forty".