1131653540 has 24 divisors (see below), whose sum is σ = 2405108160. Its totient is φ = 447207008.

The previous prime is 1131653531. The next prime is 1131653599. The reversal of 1131653540 is 453561311.

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, 339200 + ... + 342519.

It is an arithmetic number, because the mean of its divisors is an integer number (100212840).

Almost surely, 2^1131653540 is an apocalyptic number.

1131653540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131653540 is an abundant number, since it is smaller than the sum of its proper divisors (1273454620).

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

1131653540 is a wasteful number, since it uses less digits than its factorization.

1131653540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681811 (or 681809 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 1131653540 is about 33640.0585611857. The cubic root of 1131653540 is about 1042.0882412933.

The spelling of 1131653540 in words is "one billion, one hundred thirty-one million, six hundred fifty-three thousand, five hundred forty".