161950 has 24 divisors (see below), whose sum is σ = 312480. Its totient is φ = 62400.

The previous prime is 161947. The next prime is 161957. The reversal of 161950 is 59161.

It is an Ulam number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161957) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2011 + ... + 2089.

It is an arithmetic number, because the mean of its divisors is an integer number (13020).

2¹⁶¹⁹⁵⁰ is an apocalyptic number.

161950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161950 is a deficient number, since it is larger than the sum of its proper divisors (150530).

161950 is a wasteful number, since it uses less digits than its factorization.

161950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 161950 is about 402.4301181572. The cubic root of 161950 is about 54.5080088110.

It can be divided in two parts, 161 and 950, that added together give a palindrome (1111).

The spelling of 161950 in words is "one hundred sixty-one thousand, nine hundred fifty".