1090599056 has 20 divisors (see below), whose sum is σ = 2185899900. Its totient is φ = 526495872.

The previous prime is 1090599043. The next prime is 1090599089. The reversal of 1090599056 is 6509950901.

It can be written as a sum of positive squares in 2 ways, for example, as 471584656 + 619014400 = 21716^2 + 24880^2 .

It is a super-2 number, since 2×1090599056² = 2378812601896182272, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1090598998 and 1090599016.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1174751 + ... + 1175678.

It is an arithmetic number, because the mean of its divisors is an integer number (109294995).

Almost surely, 2^1090599056 is an apocalyptic number.

1090599056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1090599056 is an abundant number, since it is smaller than the sum of its proper divisors (1095300844).

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

1090599056 is a wasteful number, since it uses less digits than its factorization.

1090599056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2350466 (or 2350460 counting only the distinct ones).

The product of its (nonzero) digits is 109350, while the sum is 44.

The square root of 1090599056 is about 33024.2192337684. The cubic root of 1090599056 is about 1029.3309684247.

The spelling of 1090599056 in words is "one billion, ninety million, five hundred ninety-nine thousand, fifty-six".