3718493 has 4 divisors (see below), whose sum is σ = 3722940. Its totient is φ = 3714048.

The previous prime is 3718489. The next prime is 3718501. The reversal of 3718493 is 3948173.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 683929 + 3034564 = 827^2 + 1742^2 .

It is a cyclic number.

It is not a de Polignac number, because 3718493 - 2² = 3718489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3718423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548 + ... + 2781.

It is an arithmetic number, because the mean of its divisors is an integer number (930735).

Almost surely, 2^3718493 is an apocalyptic number.

It is an amenable number.

3718493 is a deficient number, since it is larger than the sum of its proper divisors (4447).

3718493 is a wasteful number, since it uses less digits than its factorization.

3718493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4446.

The product of its digits is 18144, while the sum is 35.

The square root of 3718493 is about 1928.3394410736. The cubic root of 3718493 is about 154.9252917808.

The spelling of 3718493 in words is "three million, seven hundred eighteen thousand, four hundred ninety-three".