161463500 has 96 divisors (see below), whose sum is σ = 397522944. Its totient is φ = 56760000.

The previous prime is 161463499. The next prime is 161463529. The reversal of 161463500 is 5364161.

It is a self number, because there is not a number n which added to its sum of digits gives 161463500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170027 + ... + 170973.

It is an arithmetic number, because the mean of its divisors is an integer number (4140864).

Almost surely, 2^161463500 is an apocalyptic number.

161463500 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 161463500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198761472).

161463500 is an abundant number, since it is smaller than the sum of its proper divisors (236059444).

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

161463500 is a wasteful number, since it uses less digits than its factorization.

161463500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008 (or 996 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 161463500 is about 12706.8288726968. The cubic root of 161463500 is about 544.5337313265.

The spelling of 161463500 in words is "one hundred sixty-one million, four hundred sixty-three thousand, five hundred".