105989618 has 32 divisors (see below), whose sum is σ = 184574208. Its totient is φ = 44712000.

The previous prime is 105989573. The next prime is 105989621. The reversal of 105989618 is 816989501.

It is a super-2 number, since 2×105989618² = 22467598247571848, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 382496 + ... + 382772.

It is an arithmetic number, because the mean of its divisors is an integer number (5767944).

Almost surely, 2^105989618 is an apocalyptic number.

105989618 is a deficient number, since it is larger than the sum of its proper divisors (78584590).

105989618 is a wasteful number, since it uses less digits than its factorization.

105989618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618.

The product of its (nonzero) digits is 155520, while the sum is 47.

The square root of 105989618 is about 10295.1259341496. The cubic root of 105989618 is about 473.2468976379.

The spelling of 105989618 in words is "one hundred five million, nine hundred eighty-nine thousand, six hundred eighteen".