161148504 has 64 divisors (see below), whose sum is σ = 440634240. Its totient is φ = 48706560.

The previous prime is 161148469. The next prime is 161148541. The reversal of 161148504 is 405841161.

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, 177219 + ... + 178125.

It is an arithmetic number, because the mean of its divisors is an integer number (6884910).

Almost surely, 2^161148504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161148504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220317120).

161148504 is an abundant number, since it is smaller than the sum of its proper divisors (279485736).

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

161148504 is a wasteful number, since it uses less digits than its factorization.

161148504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1600 (or 1596 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 161148504 is about 12694.4280690388. The cubic root of 161148504 is about 544.1793940501.

Adding to 161148504 its reverse (405841161), we get a palindrome (566989665).

The spelling of 161148504 in words is "one hundred sixty-one million, one hundred forty-eight thousand, five hundred four".