1131249460 has 24 divisors (see below), whose sum is σ = 2591590176. Its totient is φ = 411363360.

The previous prime is 1131249443. The next prime is 1131249517. The reversal of 1131249460 is 649421311.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2570802 + ... + 2571241.

It is an arithmetic number, because the mean of its divisors is an integer number (107982924).

Almost surely, 2^1131249460 is an apocalyptic number.

1131249460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131249460 is an abundant number, since it is smaller than the sum of its proper divisors (1460340716).

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

1131249460 is a wasteful number, since it uses less digits than its factorization.

1131249460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5142063 (or 5142061 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1131249460 is about 33634.0520901065. The cubic root of 1131249460 is about 1041.9641935670.

The spelling of 1131249460 in words is "one billion, one hundred thirty-one million, two hundred forty-nine thousand, four hundred sixty".