1155783432 has 16 divisors (see below), whose sum is σ = 2889458640. Its totient is φ = 385261136.

The previous prime is 1155783407. The next prime is 1155783449. The reversal of 1155783432 is 2343875511.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24078798 + ... + 24078845.

It is an arithmetic number, because the mean of its divisors is an integer number (180591165).

Almost surely, 2^1155783432 is an apocalyptic number.

1155783432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1155783432 is an abundant number, since it is smaller than the sum of its proper divisors (1733675208).

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

1155783432 is a wasteful number, since it uses less digits than its factorization.

1155783432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48157652 (or 48157648 counting only the distinct ones).

The product of its digits is 100800, while the sum is 39.

The square root of 1155783432 is about 33996.8150272934. The cubic root of 1155783432 is about 1049.4429190036.

The spelling of 1155783432 in words is "one billion, one hundred fifty-five million, seven hundred eighty-three thousand, four hundred thirty-two".