1158165432 has 64 divisors (see below), whose sum is σ = 3247257600. Its totient is φ = 382439520.

The previous prime is 1158165427. The next prime is 1158165461. The reversal of 1158165432 is 2345618511.

1158165432 is a `hidden beast` number, since 11 + 58 + 165 + 432 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1944 + ... + 48167.

It is an arithmetic number, because the mean of its divisors is an integer number (50738400).

Almost surely, 2^1158165432 is an apocalyptic number.

1158165432 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 1158165432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1623628800).

1158165432 is an abundant number, since it is smaller than the sum of its proper divisors (2089092168).

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

1158165432 is a wasteful number, since it uses less digits than its factorization.

1158165432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50233 (or 50223 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 1158165432 is about 34031.8296892777. The cubic root of 1158165432 is about 1050.1633704981.

The spelling of 1158165432 in words is "one billion, one hundred fifty-eight million, one hundred sixty-five thousand, four hundred thirty-two".