1158442432 has 56 divisors (see below), whose sum is σ = 2647370880. Its totient is φ = 492660480.

The previous prime is 1158442421. The next prime is 1158442433. The reversal of 1158442432 is 2342448511.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158442433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48819 + ... + 68557.

It is an arithmetic number, because the mean of its divisors is an integer number (47274480).

Almost surely, 2^1158442432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1158442432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1323685440).

1158442432 is an abundant number, since it is smaller than the sum of its proper divisors (1488928448).

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

1158442432 is a wasteful number, since it uses less digits than its factorization.

1158442432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19889 (or 19879 counting only the distinct ones).

The product of its digits is 30720, while the sum is 34.

The square root of 1158442432 is about 34035.8991654400. The cubic root of 1158442432 is about 1050.2470868243.

The spelling of 1158442432 in words is "one billion, one hundred fifty-eight million, four hundred forty-two thousand, four hundred thirty-two".