105990194 has 4 divisors (see below), whose sum is σ = 158985294. Its totient is φ = 52995096.

The previous prime is 105990179. The next prime is 105990239. The reversal of 105990194 is 491099501.

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

It can be written as a sum of positive squares in only one way, i.e., 89056969 + 16933225 = 9437^2 + 4115^2 .

It is a super-2 number, since 2×105990194² = 22467842448315272, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26497547 + ... + 26497550.

Almost surely, 2^105990194 is an apocalyptic number.

105990194 is a deficient number, since it is larger than the sum of its proper divisors (52995100).

105990194 is an equidigital number, since it uses as much as digits as its factorization.

105990194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52995099.

The product of its (nonzero) digits is 14580, while the sum is 38.

The square root of 105990194 is about 10295.1539085144. The cubic root of 105990194 is about 473.2477549223.

The spelling of 105990194 in words is "one hundred five million, nine hundred ninety thousand, one hundred ninety-four".