1087173380 has 12 divisors (see below), whose sum is σ = 2283064140. Its totient is φ = 434869344.

The previous prime is 1087173319. The next prime is 1087173389. The reversal of 1087173380 is 833717801.

It can be written as a sum of positive squares in 2 ways, for example, as 321987136 + 765186244 = 17944^2 + 27662^2 .

It is not an unprimeable number, because it can be changed into a prime (1087173389) 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, 27179315 + ... + 27179354.

It is an arithmetic number, because the mean of its divisors is an integer number (190255345).

Almost surely, 2^1087173380 is an apocalyptic number.

1087173380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1087173380 is an abundant number, since it is smaller than the sum of its proper divisors (1195890760).

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

1087173380 is a wasteful number, since it uses less digits than its factorization.

1087173380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54358678 (or 54358676 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 1087173380 is about 32972.3123241304. The cubic root of 1087173380 is about 1028.2520956629.

The spelling of 1087173380 in words is "one billion, eighty-seven million, one hundred seventy-three thousand, three hundred eighty".