105081918 has 16 divisors (see below), whose sum is σ = 212129280. Its totient is φ = 34699736.

The previous prime is 105081883. The next prime is 105081941. The reversal of 105081918 is 819180501.

It is a super-2 number, since 2×105081918² = 22084418981117448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81198 + ... + 82481.

It is an arithmetic number, because the mean of its divisors is an integer number (13258080).

Almost surely, 2^105081918 is an apocalyptic number.

105081918 is an abundant number, since it is smaller than the sum of its proper divisors (107047362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

105081918 is a wasteful number, since it uses less digits than its factorization.

105081918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163791.

The product of its (nonzero) digits is 2880, while the sum is 33.

The square root of 105081918 is about 10250.9471757492. The cubic root of 105081918 is about 471.8920531416.

The spelling of 105081918 in words is "one hundred five million, eighty-one thousand, nine hundred eighteen".