158965632 has 128 divisors (see below), whose sum is σ = 536275200. Its totient is φ = 45411840.

The previous prime is 158965601. The next prime is 158965643. The reversal of 158965632 is 236569851.

158965632 is a `hidden beast` number, since 1 + 5 + 8 + 9 + 6 + 5 + 632 = 666.

158965632 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (128).

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, 20907 + ... + 27477.

It is an arithmetic number, because the mean of its divisors is an integer number (4189650).

Almost surely, 2^158965632 is an apocalyptic number.

158965632 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 158965632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268137600).

158965632 is an abundant number, since it is smaller than the sum of its proper divisors (377309568).

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

158965632 is an equidigital number, since it uses as much as digits as its factorization.

158965632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6601 (or 6583 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The square root of 158965632 is about 12608.1573594241. The cubic root of 158965632 is about 541.7111154162.

It can be divided in two parts, 15896 and 5632, that added together give a triangular number (21528 = T₂₀₇).

The spelling of 158965632 in words is "one hundred fifty-eight million, nine hundred sixty-five thousand, six hundred thirty-two".