1131808470 has 64 divisors (see below), whose sum is σ = 2945073600. Its totient is φ = 276715008.

The previous prime is 1131808459. The next prime is 1131808477. The reversal of 1131808470 is 748081311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131808477) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48372 + ... + 67848.

It is an arithmetic number, because the mean of its divisors is an integer number (46016775).

Almost surely, 2^1131808470 is an apocalyptic number.

1131808470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131808470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1472536800).

1131808470 is an abundant number, since it is smaller than the sum of its proper divisors (1813265130).

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

1131808470 is a wasteful number, since it uses less digits than its factorization.

1131808470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19649.

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 1131808470 is about 33642.3612429330. The cubic root of 1131808470 is about 1042.1357951185.

Adding to 1131808470 its reverse (748081311), we get a palindrome (1879889781).

The spelling of 1131808470 in words is "one billion, one hundred thirty-one million, eight hundred eight thousand, four hundred seventy".