166426918 has 8 divisors (see below), whose sum is σ = 285303312. Its totient is φ = 71325816.

The previous prime is 166426903. The next prime is 166426921. The reversal of 166426918 is 819624661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5943805 + ... + 5943832.

It is an arithmetic number, because the mean of its divisors is an integer number (35662914).

Almost surely, 2^166426918 is an apocalyptic number.

166426918 is a deficient number, since it is larger than the sum of its proper divisors (118876394).

166426918 is a wasteful number, since it uses less digits than its factorization.

166426918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11887646.

The product of its digits is 124416, while the sum is 43.

The square root of 166426918 is about 12900.6557197687. The cubic root of 166426918 is about 550.0572039675.

It can be divided in two parts, 1664 and 26918, that added together give a palindrome (28582).

The spelling of 166426918 in words is "one hundred sixty-six million, four hundred twenty-six thousand, nine hundred eighteen".