161883 has 6 divisors (see below), whose sum is σ = 233844. Its totient is φ = 107916.

The previous prime is 161881. The next prime is 161911. The reversal of 161883 is 388161.

It is not a de Polignac number, because 161883 - 2¹ = 161881 is a prime.

It is a super-2 number, since 2×161883² = 52412211378, which contains 22 as substring.

161883 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (161881) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8985 + ... + 9002.

It is an arithmetic number, because the mean of its divisors is an integer number (38974).

2¹⁶¹⁸⁸³ is an apocalyptic number.

161883 is a deficient number, since it is larger than the sum of its proper divisors (71961).

161883 is a wasteful number, since it uses less digits than its factorization.

161883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17993 (or 17990 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 161883 is about 402.3468652792. The cubic root of 161883 is about 54.5004909756.

The spelling of 161883 in words is "one hundred sixty-one thousand, eight hundred eighty-three".