105412618 has 4 divisors (see below), whose sum is σ = 158118930. Its totient is φ = 52706308.

The previous prime is 105412609. The next prime is 105412639. The reversal of 105412618 is 816214501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 816214501 = 23 ⋅35487587.

It can be written as a sum of positive squares in only one way, i.e., 75568249 + 29844369 = 8693^2 + 5463^2 .

It is a super-2 number, since 2×105412618² = 22223640067227848, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26353153 + ... + 26353156.

Almost surely, 2^105412618 is an apocalyptic number.

105412618 is a deficient number, since it is larger than the sum of its proper divisors (52706312).

105412618 is an equidigital number, since it uses as much as digits as its factorization.

105412618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52706311.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 105412618 is about 10267.0647217206. The cubic root of 105412618 is about 472.3865603020.

It can be divided in two parts, 105412 and 618, that added together give a triangular number (106030 = T₄₆₀).

The spelling of 105412618 in words is "one hundred five million, four hundred twelve thousand, six hundred eighteen".