258542018 has 64 divisors (see below), whose sum is σ = 496419840. Its totient is φ = 98423808.

The previous prime is 258542017. The next prime is 258542033. The reversal of 258542018 is 810245852.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (258542017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 323996 + ... + 324792.

It is an arithmetic number, because the mean of its divisors is an integer number (7756560).

Almost surely, 2^258542018 is an apocalyptic number.

258542018 is a deficient number, since it is larger than the sum of its proper divisors (237877822).

258542018 is a wasteful number, since it uses less digits than its factorization.

258542018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899.

The product of its (nonzero) digits is 25600, while the sum is 35.

The square root of 258542018 is about 16079.2418353603. The cubic root of 258542018 is about 637.0551702925.

It can be divided in two parts, 25854 and 2018, that added together give a palindrome (27872).

The spelling of 258542018 in words is "two hundred fifty-eight million, five hundred forty-two thousand, eighteen".