105819994 has 16 divisors (see below), whose sum is σ = 184381056. Its totient is φ = 44607600.

The previous prime is 105819991. The next prime is 105820003. The reversal of 105819994 is 499918501.

It is a super-2 number, since 2×105819994² = 22395742260320072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105819991) 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, 61102 + ... + 62809.

It is an arithmetic number, because the mean of its divisors is an integer number (11523816).

Almost surely, 2^105819994 is an apocalyptic number.

105819994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

105819994 is a deficient number, since it is larger than the sum of its proper divisors (78561062).

105819994 is a wasteful number, since it uses less digits than its factorization.

105819994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123981.

The product of its (nonzero) digits is 116640, while the sum is 46.

The square root of 105819994 is about 10286.8845623930. The cubic root of 105819994 is about 472.9943040523.

The spelling of 105819994 in words is "one hundred five million, eight hundred nineteen thousand, nine hundred ninety-four".