1100890090 has 8 divisors (see below), whose sum is σ = 1981602180. Its totient is φ = 440356032.

The previous prime is 1100890067. The next prime is 1100890099. The reversal of 1100890090 is 900980011.

It can be written as a sum of positive squares in 2 ways, for example, as 1083923929 + 16966161 = 32923^2 + 4119^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1100890099) 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, 55044495 + ... + 55044514.

Almost surely, 2^1100890090 is an apocalyptic number.

1100890090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1100890090 is a deficient number, since it is larger than the sum of its proper divisors (880712090).

1100890090 is a wasteful number, since it uses less digits than its factorization.

1100890090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110089016.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 1100890090 is about 33179.6638017928. The cubic root of 1100890090 is about 1032.5584713626.

The spelling of 1100890090 in words is "one billion, one hundred million, eight hundred ninety thousand, ninety".