161508424 has 64 divisors (see below), whose sum is σ = 390614400. Its totient is φ = 60748800.

The previous prime is 161508421. The next prime is 161508427. The reversal of 161508424 is 424805161.

161508424 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (161508421) and next prime (161508427).

It is not an unprimeable number, because it can be changed into a prime (161508421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13344 + ... + 22384.

It is an arithmetic number, because the mean of its divisors is an integer number (6103350).

Almost surely, 2^161508424 is an apocalyptic number.

161508424 is a gapful number since it is divisible by the number (14) 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 161508424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195307200).

161508424 is an abundant number, since it is smaller than the sum of its proper divisors (229105976).

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

161508424 is a wasteful number, since it uses less digits than its factorization.

161508424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9094 (or 9090 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 161508424 is about 12708.5964606639. The cubic root of 161508424 is about 544.5842285286.

The spelling of 161508424 in words is "one hundred sixty-one million, five hundred eight thousand, four hundred twenty-four".