1081797808 has 40 divisors (see below), whose sum is σ = 2579675168. Its totient is φ = 427963392.

The previous prime is 1081797791. The next prime is 1081797809. The reversal of 1081797808 is 8087971801.

It is not an unprimeable number, because it can be changed into a prime (1081797809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370041 + ... + 372952.

Almost surely, 2^1081797808 is an apocalyptic number.

It is an amenable number.

1081797808 is an abundant number, since it is smaller than the sum of its proper divisors (1497877360).

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

1081797808 is a wasteful number, since it uses less digits than its factorization.

1081797808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743021 (or 743015 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 49.

The square root of 1081797808 is about 32890.6948543201. The cubic root of 1081797808 is about 1026.5545502651.

The spelling of 1081797808 in words is "one billion, eighty-one million, seven hundred ninety-seven thousand, eight hundred eight".