1131464040 has 128 divisors (see below), whose sum is σ = 4004536320. Its totient is φ = 250272000.

The previous prime is 1131464027. The next prime is 1131464057. The reversal of 1131464040 is 404641311.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1131464040.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4315 + ... + 47765.

It is an arithmetic number, because the mean of its divisors is an integer number (31285440).

Almost surely, 2^1131464040 is an apocalyptic number.

1131464040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131464040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2002268160).

1131464040 is an abundant number, since it is smaller than the sum of its proper divisors (2873072280).

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

1131464040 is a wasteful number, since it uses less digits than its factorization.

1131464040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43503 (or 43499 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1131464040 is about 33637.2418607709. The cubic root of 1131464040 is about 1042.0300707377.

The spelling of 1131464040 in words is "one billion, one hundred thirty-one million, four hundred sixty-four thousand, forty".