168169974 has 64 divisors (see below), whose sum is σ = 405098496. Its totient is φ = 45501984.

The previous prime is 168169973. The next prime is 168169979. The reversal of 168169974 is 479961861.

It is a happy number.

It is a super-2 number, since 2×168169974² = 56562280310321352, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168169973) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102549 + ... + 104175.

It is an arithmetic number, because the mean of its divisors is an integer number (6329664).

Almost surely, 2^168169974 is an apocalyptic number.

168169974 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 168169974, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202549248).

168169974 is an abundant number, since it is smaller than the sum of its proper divisors (236928522).

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

168169974 is a wasteful number, since it uses less digits than its factorization.

168169974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1769.

The product of its digits is 653184, while the sum is 51.

The square root of 168169974 is about 12968.0366285726. The cubic root of 168169974 is about 551.9708619885.

The spelling of 168169974 in words is "one hundred sixty-eight million, one hundred sixty-nine thousand, nine hundred seventy-four".