166010903 has 2 divisors, whose sum is σ = 166010904. Its totient is φ = 166010902.

The previous prime is 166010861. The next prime is 166010939. The reversal of 166010903 is 309010661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166010903 - 2⁶ = 166010839 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166010963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83005451 + 83005452.

It is an arithmetic number, because the mean of its divisors is an integer number (83005452).

Almost surely, 2^166010903 is an apocalyptic number.

166010903 is a deficient number, since it is larger than the sum of its proper divisors (1).

166010903 is an equidigital number, since it uses as much as digits as its factorization.

166010903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 166010903 is about 12884.5218382368. The cubic root of 166010903 is about 549.5984981582.

The spelling of 166010903 in words is "one hundred sixty-six million, ten thousand, nine hundred three".