1181040432 has 160 divisors (see below), whose sum is σ = 3740760576. Its totient is φ = 315955200.

The previous prime is 1181040431. The next prime is 1181040433. The reversal of 1181040432 is 2340401811.

It is an interprime number because it is at equal distance from previous prime (1181040431) and next prime (1181040433).

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

It is not an unprimeable number, because it can be changed into a prime (1181040431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 154132 + ... + 161612.

Almost surely, 2^1181040432 is an apocalyptic number.

1181040432 is a gapful number since it is divisible by the number (12) 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 1181040432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1870380288).

1181040432 is an abundant number, since it is smaller than the sum of its proper divisors (2559720144).

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

1181040432 is a wasteful number, since it uses less digits than its factorization.

1181040432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7539 (or 7533 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 1181040432 is about 34366.2688111468. The cubic root of 1181040432 is about 1057.0322923220.

The spelling of 1181040432 in words is "one billion, one hundred eighty-one million, forty thousand, four hundred thirty-two".