1131263760 has 80 divisors (see below), whose sum is σ = 3825737280. Its totient is φ = 274245120.

The previous prime is 1131263701. The next prime is 1131263767. The reversal of 1131263760 is 673621311.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1131263767) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211615 + ... + 216894.

It is an arithmetic number, because the mean of its divisors is an integer number (47821716).

Almost surely, 2^1131263760 is an apocalyptic number.

1131263760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131263760 is an abundant number, since it is smaller than the sum of its proper divisors (2694473520).

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

1131263760 is a wasteful number, since it uses less digits than its factorization.

1131263760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428536 (or 428530 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 1131263760 is about 33634.2646716113. The cubic root of 1131263760 is about 1041.9685840001.

It can be divided in two parts, 113126 and 3760, that added together give a triangular number (116886 = T₄₈₃).

The spelling of 1131263760 in words is "one billion, one hundred thirty-one million, two hundred sixty-three thousand, seven hundred sixty".