105518849 has 8 divisors (see below), whose sum is σ = 109641000. Its totient is φ = 101428992.

The previous prime is 105518843. The next prime is 105518863. The reversal of 105518849 is 948815501.

It can be written as a sum of positive squares in 4 ways, for example, as 25684624 + 79834225 = 5068^2 + 8935^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105518849 is a prime.

It is a super-2 number, since 2×105518849² = 22268454988569602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105518843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1304 + ... + 14585.

It is an arithmetic number, because the mean of its divisors is an integer number (13705125).

Almost surely, 2^105518849 is an apocalyptic number.

It is an amenable number.

105518849 is a deficient number, since it is larger than the sum of its proper divisors (4122151).

105518849 is a wasteful number, since it uses less digits than its factorization.

105518849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16147.

The product of its (nonzero) digits is 57600, while the sum is 41.

The square root of 105518849 is about 10272.2368060710. The cubic root of 105518849 is about 472.5451916874.

The spelling of 105518849 in words is "one hundred five million, five hundred eighteen thousand, eight hundred forty-nine".