105618049 has 4 divisors (see below), whose sum is σ = 106552836. Its totient is φ = 104683264.

The previous prime is 105618043. The next prime is 105618053. The reversal of 105618049 is 940816501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32001649 + 73616400 = 5657^2 + 8580^2 .

It is a cyclic number.

It is not a de Polignac number, because 105618049 - 2⁷ = 105617921 is a prime.

It is a super-2 number, since 2×105618049² = 22310344549132802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105618043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 467224 + ... + 467449.

It is an arithmetic number, because the mean of its divisors is an integer number (26638209).

Almost surely, 2^105618049 is an apocalyptic number.

It is an amenable number.

105618049 is a deficient number, since it is larger than the sum of its proper divisors (934787).

105618049 is an equidigital number, since it uses as much as digits as its factorization.

105618049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934786.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 105618049 is about 10277.0642208755. The cubic root of 105618049 is about 472.6932278008.

The spelling of 105618049 in words is "one hundred five million, six hundred eighteen thousand, forty-nine".