1090883988 has 18 divisors (see below), whose sum is σ = 2757512394. Its totient is φ = 363627984.

The previous prime is 1090883977. The next prime is 1090884013. The reversal of 1090883988 is 8893880901.

It can be written as a sum of positive squares in only one way, i.e., 610485264 + 480398724 = 24708^2 + 21918^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15151131 + ... + 15151202.

It is an arithmetic number, because the mean of its divisors is an integer number (153195133).

Almost surely, 2^1090883988 is an apocalyptic number.

1090883988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1090883988 is an abundant number, since it is smaller than the sum of its proper divisors (1666628406).

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

1090883988 is a wasteful number, since it uses less digits than its factorization.

1090883988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30302343 (or 30302338 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 54.

The square root of 1090883988 is about 33028.5329374467. The cubic root of 1090883988 is about 1029.4206022799.

The spelling of 1090883988 in words is "one billion, ninety million, eight hundred eighty-three thousand, nine hundred eighty-eight".