166218448 has 40 divisors (see below), whose sum is σ = 352048896. Its totient is φ = 75398400.

The previous prime is 166218443. The next prime is 166218487. The reversal of 166218448 is 844812661.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 166218448.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166218443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167233 + ... + 168223.

Almost surely, 2^166218448 is an apocalyptic number.

It is an amenable number.

166218448 is an abundant number, since it is smaller than the sum of its proper divisors (185830448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166218448 is a wasteful number, since it uses less digits than its factorization.

166218448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1963 (or 1957 counting only the distinct ones).

The product of its digits is 73728, while the sum is 40.

The square root of 166218448 is about 12892.5733660895. The cubic root of 166218448 is about 549.8274367728.

The spelling of 166218448 in words is "one hundred sixty-six million, two hundred eighteen thousand, four hundred forty-eight".