166162503 has 16 divisors (see below), whose sum is σ = 239012480. Its totient is φ = 102073824.

The previous prime is 166162501. The next prime is 166162519. The reversal of 166162503 is 305261661.

It is not a de Polignac number, because 166162503 - 2¹ = 166162501 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 (166162501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20700 + ... + 27582.

It is an arithmetic number, because the mean of its divisors is an integer number (14938280).

Almost surely, 2^166162503 is an apocalyptic number.

166162503 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

166162503 is a deficient number, since it is larger than the sum of its proper divisors (72849977).

166162503 is a wasteful number, since it uses less digits than its factorization.

166162503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7518.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 166162503 is about 12890.4035235519. The cubic root of 166162503 is about 549.7657437658.

The spelling of 166162503 in words is "one hundred sixty-six million, one hundred sixty-two thousand, five hundred three".