161358432 has 48 divisors (see below), whose sum is σ = 441987840. Its totient is φ = 51446912.

The previous prime is 161358419. The next prime is 161358437. The reversal of 161358432 is 234853161.

161358432 is digitally balanced in base 3, 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 (48).

It is a junction number, because it is equal to n+sod(n) for n = 161358393 and 161358402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161358437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34332 + ... + 38747.

It is an arithmetic number, because the mean of its divisors is an integer number (9208080).

Almost surely, 2^161358432 is an apocalyptic number.

161358432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161358432 is an abundant number, since it is smaller than the sum of its proper divisors (280629408).

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

161358432 is a wasteful number, since it uses less digits than its factorization.

161358432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73115 (or 73107 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 161358432 is about 12702.6938875185. The cubic root of 161358432 is about 544.4155921712.

The spelling of 161358432 in words is "one hundred sixty-one million, three hundred fifty-eight thousand, four hundred thirty-two".