168165450 has 48 divisors (see below), whose sum is σ = 463392960. Its totient is φ = 44843760.

The previous prime is 168165401. The next prime is 168165451. The reversal of 168165450 is 54561861.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (168165451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60934 + ... + 63633.

It is an arithmetic number, because the mean of its divisors is an integer number (9654020).

Almost surely, 2^168165450 is an apocalyptic number.

168165450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

168165450 is an abundant number, since it is smaller than the sum of its proper divisors (295227510).

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

168165450 is a wasteful number, since it uses less digits than its factorization.

168165450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124588 (or 124577 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 168165450 is about 12967.8621985276. The cubic root of 168165450 is about 551.9659123563.

The spelling of 168165450 in words is "one hundred sixty-eight million, one hundred sixty-five thousand, four hundred fifty".