3718445 has 4 divisors (see below), whose sum is σ = 4462140. Its totient is φ = 2974752.

The previous prime is 3718439. The next prime is 3718457. The reversal of 3718445 is 5448173.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5448173 = 127 ⋅42899.

It can be written as a sum of positive squares in 2 ways, for example, as 1885129 + 1833316 = 1373^2 + 1354^2 .

It is a cyclic number.

It is not a de Polignac number, because 3718445 - 2⁶ = 3718381 is a prime.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 371840 + ... + 371849.

It is an arithmetic number, because the mean of its divisors is an integer number (1115535).

Almost surely, 2^3718445 is an apocalyptic number.

It is an amenable number.

3718445 is a deficient number, since it is larger than the sum of its proper divisors (743695).

3718445 is an equidigital number, since it uses as much as digits as its factorization.

3718445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743694.

The product of its digits is 13440, while the sum is 32.

The square root of 3718445 is about 1928.3269950919. The cubic root of 3718445 is about 154.9246251626.

The spelling of 3718445 in words is "three million, seven hundred eighteen thousand, four hundred forty-five".