1100808920 has 32 divisors (see below), whose sum is σ = 2483989200. Its totient is φ = 439049088.

The previous prime is 1100808893. The next prime is 1100808923. The reversal of 1100808920 is 298080011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100808923) 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, 25775 + ... + 53534.

Almost surely, 2^1100808920 is an apocalyptic number.

1100808920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100808920 is an abundant number, since it is smaller than the sum of its proper divisors (1383180280).

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

1100808920 is a wasteful number, since it uses less digits than its factorization.

1100808920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79667 (or 79663 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 1100808920 is about 33178.4405902387. The cubic root of 1100808920 is about 1032.5330934641.

Adding to 1100808920 its reverse (298080011), we get a palindrome (1398888931).

The spelling of 1100808920 in words is "one billion, one hundred million, eight hundred eight thousand, nine hundred twenty".