45538186 has 4 divisors (see below), whose sum is σ = 68307282. Its totient is φ = 22769092.

The previous prime is 45538169. The next prime is 45538201. The reversal of 45538186 is 68183554.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68183554 = 2 ⋅34091777.

It can be written as a sum of positive squares in only one way, i.e., 26780625 + 18757561 = 5175^2 + 4331^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11384545 + ... + 11384548.

Almost surely, 2^45538186 is an apocalyptic number.

45538186 is a deficient number, since it is larger than the sum of its proper divisors (22769096).

45538186 is a wasteful number, since it uses less digits than its factorization.

45538186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22769095.

The product of its digits is 115200, while the sum is 40.

The square root of 45538186 is about 6748.1987226222. The cubic root of 45538186 is about 357.1016927641.

The spelling of 45538186 in words is "forty-five million, five hundred thirty-eight thousand, one hundred eighty-six".