45378218 has 32 divisors (see below), whose sum is σ = 73543680. Its totient is φ = 20948400.

The previous prime is 45378217. The next prime is 45378239. The reversal of 45378218 is 81287354.

45378218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×45378218³ (a number of 24 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (45378211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300443 + ... + 300593.

It is an arithmetic number, because the mean of its divisors is an integer number (2298240).

Almost surely, 2^45378218 is an apocalyptic number.

45378218 is a deficient number, since it is larger than the sum of its proper divisors (28165462).

45378218 is a wasteful number, since it uses less digits than its factorization.

45378218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362.

The product of its digits is 53760, while the sum is 38.

The square root of 45378218 is about 6736.3356507823. The cubic root of 45378218 is about 356.6830560883.

The spelling of 45378218 in words is "forty-five million, three hundred seventy-eight thousand, two hundred eighteen".