105211618 has 8 divisors (see below), whose sum is σ = 158178240. Its totient is φ = 52485540.

The previous prime is 105211597. The next prime is 105211619. The reversal of 105211618 is 816112501.

It is a happy number.

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

It is a super-2 number, since 2×105211618² = 22138969124355848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105211592 and 105211601.

It is not an unprimeable number, because it can be changed into a prime (105211619) 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 3 ways as a sum of consecutive naturals, for example, 59038 + ... + 60793.

It is an arithmetic number, because the mean of its divisors is an integer number (19772280).

Almost surely, 2^105211618 is an apocalyptic number.

105211618 is a deficient number, since it is larger than the sum of its proper divisors (52966622).

105211618 is a wasteful number, since it uses less digits than its factorization.

105211618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120272.

The product of its (nonzero) digits is 480, while the sum is 25.

The square root of 105211618 is about 10257.2714695478. The cubic root of 105211618 is about 472.0861215303.

The spelling of 105211618 in words is "one hundred five million, two hundred eleven thousand, six hundred eighteen".