166518315 has 96 divisors (see below), whose sum is σ = 328224960. Its totient is φ = 79792128.

The previous prime is 166518311. The next prime is 166518323. The reversal of 166518315 is 513815661.

It is not a de Polignac number, because 166518315 - 2² = 166518311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166518315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166518311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3141829 + ... + 3141881.

It is an arithmetic number, because the mean of its divisors is an integer number (3419010).

Almost surely, 2^166518315 is an apocalyptic number.

166518315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

166518315 is a deficient number, since it is larger than the sum of its proper divisors (161706645).

166518315 is a wasteful number, since it uses less digits than its factorization.

166518315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 115 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 166518315 is about 12904.1975728830. The cubic root of 166518315 is about 550.1578775419.

The spelling of 166518315 in words is "one hundred sixty-six million, five hundred eighteen thousand, three hundred fifteen".