166867383 has 4 divisors (see below), whose sum is σ = 222489848. Its totient is φ = 111244920.

The previous prime is 166867357. The next prime is 166867397. The reversal of 166867383 is 383768661.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 166867383 - 2⁹ = 166866871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166867303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27811228 + ... + 27811233.

It is an arithmetic number, because the mean of its divisors is an integer number (55622462).

Almost surely, 2^166867383 is an apocalyptic number.

166867383 is a deficient number, since it is larger than the sum of its proper divisors (55622465).

166867383 is an equidigital number, since it uses as much as digits as its factorization.

166867383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55622464.

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

The square root of 166867383 is about 12917.7158584635. The cubic root of 166867383 is about 550.5420364352.

The spelling of 166867383 in words is "one hundred sixty-six million, eight hundred sixty-seven thousand, three hundred eighty-three".