161479500 has 288 divisors, whose sum is σ = 592562880. Its totient is φ = 34070400.

The previous prime is 161479469. The next prime is 161479501. The reversal of 161479500 is 5974161.

It is not an unprimeable number, because it can be changed into a prime (161479501) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12421494 + ... + 12421506.

It is an arithmetic number, because the mean of its divisors is an integer number (2057510).

Almost surely, 2^161479500 is an apocalyptic number.

161479500 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 161479500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296281440).

161479500 is an abundant number, since it is smaller than the sum of its proper divisors (431083380).

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

161479500 is a wasteful number, since it uses less digits than its factorization.

161479500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75 (or 30 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 161479500 is about 12707.4584398297. The cubic root of 161479500 is about 544.5517173356.

The spelling of 161479500 in words is "one hundred sixty-one million, four hundred seventy-nine thousand, five hundred".