161850892 has 48 divisors (see below), whose sum is σ = 348042240. Its totient is φ = 64305792.

The previous prime is 161850851. The next prime is 161850971. The reversal of 161850892 is 298058161.

It is a super-2 number, since 2×161850892² = 52391422482391328, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21768 + ... + 28240.

It is an arithmetic number, because the mean of its divisors is an integer number (7250880).

Almost surely, 2^161850892 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161850892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174021120).

161850892 is an abundant number, since it is smaller than the sum of its proper divisors (186191348).

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

161850892 is a wasteful number, since it uses less digits than its factorization.

161850892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6550 (or 6548 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 40.

The square root of 161850892 is about 12722.0631974535. The cubic root of 161850892 is about 544.9688751408.

The spelling of 161850892 in words is "one hundred sixty-one million, eight hundred fifty thousand, eight hundred ninety-two".