166870338 has 16 divisors (see below), whose sum is σ = 337762656. Its totient is φ = 54953120.

The previous prime is 166870337. The next prime is 166870339. The reversal of 166870338 is 833078661.

166870338 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (166870337) and next prime (166870339).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 166870338.

It is not an unprimeable number, because it can be changed into a prime (166870337) 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, 167043 + ... + 168038.

It is an arithmetic number, because the mean of its divisors is an integer number (21110166).

Almost surely, 2^166870338 is an apocalyptic number.

166870338 is an abundant number, since it is smaller than the sum of its proper divisors (170892318).

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

166870338 is a wasteful number, since it uses less digits than its factorization.

166870338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335169.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 166870338 is about 12917.8302357633. The cubic root of 166870338 is about 550.5452862058.

The spelling of 166870338 in words is "one hundred sixty-six million, eight hundred seventy thousand, three hundred thirty-eight".