258838166 has 32 divisors (see below), whose sum is σ = 416404800. Its totient is φ = 120440320.

The previous prime is 258838163. The next prime is 258838171. The reversal of 258838166 is 661838852.

It is a self number, because there is not a number n which added to its sum of digits gives 258838166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258838163) 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 15 ways as a sum of consecutive naturals, for example, 211031 + ... + 212253.

It is an arithmetic number, because the mean of its divisors is an integer number (13012650).

Almost surely, 2^258838166 is an apocalyptic number.

258838166 is a deficient number, since it is larger than the sum of its proper divisors (157566634).

258838166 is a wasteful number, since it uses less digits than its factorization.

258838166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1384.

The product of its digits is 552960, while the sum is 47.

The square root of 258838166 is about 16088.4482160338. The cubic root of 258838166 is about 637.2983166187.

The spelling of 258838166 in words is "two hundred fifty-eight million, eight hundred thirty-eight thousand, one hundred sixty-six".