166368738 has 16 divisors (see below), whose sum is σ = 332895456. Its totient is φ = 55429920.

The previous prime is 166368703. The next prime is 166368739. The reversal of 166368738 is 837863661.

It is not an unprimeable number, because it can be changed into a prime (166368739) 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, 10533 + ... + 21063.

It is an arithmetic number, because the mean of its divisors is an integer number (20805966).

Almost surely, 2^166368738 is an apocalyptic number.

166368738 is an abundant number, since it is smaller than the sum of its proper divisors (166526718).

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

166368738 is a wasteful number, since it uses less digits than its factorization.

166368738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13169.

The product of its digits is 870912, while the sum is 48.

The square root of 166368738 is about 12898.4005985238. The cubic root of 166368738 is about 549.9930996379.

The spelling of 166368738 in words is "one hundred sixty-six million, three hundred sixty-eight thousand, seven hundred thirty-eight".