1131520764 has 24 divisors (see below), whose sum is σ = 2880235008. Its totient is φ = 342885040.

The previous prime is 1131520759. The next prime is 1131520769. The reversal of 1131520764 is 4670251311.

It is an interprime number because it is at equal distance from previous prime (1131520759) and next prime (1131520769).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131520769) 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, 4285932 + ... + 4286195.

It is an arithmetic number, because the mean of its divisors is an integer number (120009792).

Almost surely, 2^1131520764 is an apocalyptic number.

It is an amenable number.

1131520764 is an abundant number, since it is smaller than the sum of its proper divisors (1748714244).

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

1131520764 is a wasteful number, since it uses less digits than its factorization.

1131520764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8572145 (or 8572143 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 1131520764 is about 33638.0850227833. The cubic root of 1131520764 is about 1042.0474839074.

The spelling of 1131520764 in words is "one billion, one hundred thirty-one million, five hundred twenty thousand, seven hundred sixty-four".