161671674 has 16 divisors (see below), whose sum is σ = 324489312. Its totient is φ = 53699568.

The previous prime is 161671673. The next prime is 161671687. The reversal of 161671674 is 476176161.

It is a super-2 number, since 2×161671674² = 52275460347924552, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161671673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45909 + ... + 49304.

It is an arithmetic number, because the mean of its divisors is an integer number (20280582).

Almost surely, 2^161671674 is an apocalyptic number.

161671674 is an abundant number, since it is smaller than the sum of its proper divisors (162817638).

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

161671674 is a wasteful number, since it uses less digits than its factorization.

161671674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95501.

The product of its digits is 42336, while the sum is 39.

The square root of 161671674 is about 12715.0176562992. The cubic root of 161671674 is about 544.7676522698.

The spelling of 161671674 in words is "one hundred sixty-one million, six hundred seventy-one thousand, six hundred seventy-four".