161500234 has 8 divisors (see below), whose sum is σ = 276857568. Its totient is φ = 69214380.

The previous prime is 161500223. The next prime is 161500243. The reversal of 161500234 is 432005161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5767852 + ... + 5767879.

It is an arithmetic number, because the mean of its divisors is an integer number (34607196).

Almost surely, 2^161500234 is an apocalyptic number.

161500234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

161500234 is a deficient number, since it is larger than the sum of its proper divisors (115357334).

161500234 is a wasteful number, since it uses less digits than its factorization.

161500234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11535740.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 161500234 is about 12708.2742337424. The cubic root of 161500234 is about 544.5750231878.

Adding to 161500234 its reverse (432005161), we get a palindrome (593505395).

The spelling of 161500234 in words is "one hundred sixty-one million, five hundred thousand, two hundred thirty-four".