166480638 has 8 divisors (see below), whose sum is σ = 332961288. Its totient is φ = 55493544.

The previous prime is 166480637. The next prime is 166480663. The reversal of 166480638 is 836084661.

It is a happy number.

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

166480638 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 166480638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166480637) 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 3 ways as a sum of consecutive naturals, for example, 13873381 + ... + 13873392.

It is an arithmetic number, because the mean of its divisors is an integer number (41620161).

Almost surely, 2^166480638 is an apocalyptic number.

166480638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

166480638 is a wasteful number, since it uses less digits than its factorization.

166480638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27746778.

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 166480638 is about 12902.7376164905. The cubic root of 166480638 is about 550.1163808815.

The spelling of 166480638 in words is "one hundred sixty-six million, four hundred eighty thousand, six hundred thirty-eight".