166495387 has 2 divisors, whose sum is σ = 166495388. Its totient is φ = 166495386.

The previous prime is 166495379. The next prime is 166495391. The reversal of 166495387 is 783594661.

166495387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166495387 - 2³ = 166495379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166495387.

It is not a weakly prime, because it can be changed into another prime (166495487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83247693 + 83247694.

It is an arithmetic number, because the mean of its divisors is an integer number (83247694).

Almost surely, 2^166495387 is an apocalyptic number.

166495387 is a deficient number, since it is larger than the sum of its proper divisors (1).

166495387 is an equidigital number, since it uses as much as digits as its factorization.

166495387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 49.

The square root of 166495387 is about 12903.3091492066. The cubic root of 166495387 is about 550.1326258675.

The spelling of 166495387 in words is "one hundred sixty-six million, four hundred ninety-five thousand, three hundred eighty-seven".