166315126 has 4 divisors (see below), whose sum is σ = 249472692. Its totient is φ = 83157562.

The previous prime is 166315103. The next prime is 166315153. The reversal of 166315126 is 621513661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 621513661 = 4993 ⋅124477.

It is a super-2 number, since 2×166315126² = 55321442272791752, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41578780 + ... + 41578783.

It is an arithmetic number, because the mean of its divisors is an integer number (62368173).

Almost surely, 2^166315126 is an apocalyptic number.

166315126 is a deficient number, since it is larger than the sum of its proper divisors (83157566).

166315126 is an equidigital number, since it uses as much as digits as its factorization.

166315126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83157565.

The product of its digits is 6480, while the sum is 31.

The square root of 166315126 is about 12896.3221889033. The cubic root of 166315126 is about 549.9340152245.

Adding to 166315126 its reverse (621513661), we get a palindrome (787828787).

The spelling of 166315126 in words is "one hundred sixty-six million, three hundred fifteen thousand, one hundred twenty-six".