13945186 has 4 divisors (see below), whose sum is σ = 20917782. Its totient is φ = 6972592.

The previous prime is 13945163. The next prime is 13945193. The reversal of 13945186 is 68154931.

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., 8814961 + 5130225 = 2969^2 + 2265^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3486295 + ... + 3486298.

Almost surely, 2^13945186 is an apocalyptic number.

13945186 is a deficient number, since it is larger than the sum of its proper divisors (6972596).

13945186 is an equidigital number, since it uses as much as digits as its factorization.

13945186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6972595.

The product of its digits is 25920, while the sum is 37.

The square root of 13945186 is about 3734.3253741473. The cubic root of 13945186 is about 240.6992684899.

The spelling of 13945186 in words is "thirteen million, nine hundred forty-five thousand, one hundred eighty-six".