161937150 has 48 divisors (see below), whose sum is σ = 406473984. Its totient is φ = 42659680.

The previous prime is 161937119. The next prime is 161937161. The reversal of 161937150 is 51739161.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5947 + ... + 18953.

It is an arithmetic number, because the mean of its divisors is an integer number (8468208).

Almost surely, 2^161937150 is an apocalyptic number.

161937150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 161937150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203236992).

161937150 is an abundant number, since it is smaller than the sum of its proper divisors (244536834).

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

161937150 is a wasteful number, since it uses less digits than its factorization.

161937150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13105 (or 13100 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 33.

The square root of 161937150 is about 12725.4528406654. The cubic root of 161937150 is about 545.0656711819.

The spelling of 161937150 in words is "one hundred sixty-one million, nine hundred thirty-seven thousand, one hundred fifty".