1081813245 has 32 divisors (see below), whose sum is σ = 1810771200. Its totient is φ = 550792704.

The previous prime is 1081813199. The next prime is 1081813253. The reversal of 1081813245 is 5423181801.

It is not a de Polignac number, because 1081813245 - 2⁶ = 1081813181 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, 24744 + ... + 52686.

It is an arithmetic number, because the mean of its divisors is an integer number (56586600).

Almost surely, 2^1081813245 is an apocalyptic number.

1081813245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1081813245 is a deficient number, since it is larger than the sum of its proper divisors (728957955).

1081813245 is a wasteful number, since it uses less digits than its factorization.

1081813245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28069.

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 1081813245 is about 32890.9295247185. The cubic root of 1081813245 is about 1026.5594331391.

The spelling of 1081813245 in words is "one billion, eighty-one million, eight hundred thirteen thousand, two hundred forty-five".