1115572890 has 16 divisors (see below), whose sum is σ = 2677375008. Its totient is φ = 297486096.

The previous prime is 1115572877. The next prime is 1115572901. The reversal of 1115572890 is 982755111.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18592852 + ... + 18592911.

It is an arithmetic number, because the mean of its divisors is an integer number (167335938).

Almost surely, 2^1115572890 is an apocalyptic number.

1115572890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1115572890 is an abundant number, since it is smaller than the sum of its proper divisors (1561802118).

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

1115572890 is a wasteful number, since it uses less digits than its factorization.

1115572890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37185773.

The product of its (nonzero) digits is 25200, while the sum is 39.

The square root of 1115572890 is about 33400.1929635144. The cubic root of 1115572890 is about 1037.1286955057.

The spelling of 1115572890 in words is "one billion, one hundred fifteen million, five hundred seventy-two thousand, eight hundred ninety".