161944150 has 48 divisors (see below), whose sum is σ = 320363424. Its totient is φ = 60769280.

The previous prime is 161944141. The next prime is 161944151. The reversal of 161944150 is 51449161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161944151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59622 + ... + 62278.

It is an arithmetic number, because the mean of its divisors is an integer number (6674238).

Almost surely, 2^161944150 is an apocalyptic number.

161944150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161944150 is a deficient number, since it is larger than the sum of its proper divisors (158419274).

161944150 is a wasteful number, since it uses less digits than its factorization.

161944150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2745 (or 2740 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 161944150 is about 12725.7278770214. The cubic root of 161944150 is about 545.0735248559.

The spelling of 161944150 in words is "one hundred sixty-one million, nine hundred forty-four thousand, one hundred fifty".