161671683 has 16 divisors (see below), whose sum is σ = 231137280. Its totient is φ = 100154496.

The previous prime is 161671673. The next prime is 161671687. The reversal of 161671683 is 386176161.

It is not a de Polignac number, because 161671683 - 2⁴ = 161671667 is a prime.

It is a super-2 number, since 2×161671683² = 52275466168104978, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161671687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16035 + ... + 24092.

It is an arithmetic number, because the mean of its divisors is an integer number (14446080).

Almost surely, 2^161671683 is an apocalyptic number.

161671683 is a deficient number, since it is larger than the sum of its proper divisors (69465597).

161671683 is a wasteful number, since it uses less digits than its factorization.

161671683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40226.

The product of its digits is 36288, while the sum is 39.

The square root of 161671683 is about 12715.0180102114. The cubic root of 161671683 is about 544.7676623786.

The spelling of 161671683 in words is "one hundred sixty-one million, six hundred seventy-one thousand, six hundred eighty-three".