161500244 has 24 divisors (see below), whose sum is σ = 285818400. Its totient is φ = 79843680.

The previous prime is 161500243. The next prime is 161500249. The reversal of 161500244 is 442005161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161500243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150542 + ... + 151610.

It is an arithmetic number, because the mean of its divisors is an integer number (11909100).

Almost surely, 2^161500244 is an apocalyptic number.

It is an amenable number.

161500244 is a deficient number, since it is larger than the sum of its proper divisors (124318156).

161500244 is a wasteful number, since it uses less digits than its factorization.

161500244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1463 (or 1461 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 161500244 is about 12708.2746271868. The cubic root of 161500244 is about 544.5750344278.

The spelling of 161500244 in words is "one hundred sixty-one million, five hundred thousand, two hundred forty-four".