1813091055 has 32 divisors (see below), whose sum is σ = 3233260800. Its totient is φ = 862198272.

The previous prime is 1813091047. The next prime is 1813091069. The reversal of 1813091055 is 5501903181.

1813091055 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1813091055 - 2³ = 1813091047 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182265 + ... + 191954.

It is an arithmetic number, because the mean of its divisors is an integer number (101039400).

Almost surely, 2^1813091055 is an apocalyptic number.

1813091055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1813091055 is a deficient number, since it is larger than the sum of its proper divisors (1420169745).

1813091055 is a wasteful number, since it uses less digits than its factorization.

1813091055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374263.

The product of its (nonzero) digits is 5400, while the sum is 33.

The square root of 1813091055 is about 42580.4069379333. The cubic root of 1813091055 is about 1219.3822580312.

The spelling of 1813091055 in words is "one billion, eight hundred thirteen million, ninety-one thousand, fifty-five".