161148580 has 48 divisors (see below), whose sum is σ = 358977024. Its totient is φ = 60635520.

The previous prime is 161148577. The next prime is 161148587. The reversal of 161148580 is 85841161.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (161148587) 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, 25189 + ... + 30931.

It is an arithmetic number, because the mean of its divisors is an integer number (7478688).

Almost surely, 2^161148580 is an apocalyptic number.

161148580 is a gapful number since it is divisible by the number (10) 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 161148580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179488512).

161148580 is an abundant number, since it is smaller than the sum of its proper divisors (197828444).

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

161148580 is a wasteful number, since it uses less digits than its factorization.

161148580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5836 (or 5834 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 34.

The square root of 161148580 is about 12694.4310624778. The cubic root of 161148580 is about 544.1794795978.

The spelling of 161148580 in words is "one hundred sixty-one million, one hundred forty-eight thousand, five hundred eighty".