4018493 has 4 divisors (see below), whose sum is σ = 4069440. Its totient is φ = 3967548.

The previous prime is 4018489. The next prime is 4018507. The reversal of 4018493 is 3948104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4018493 - 2² = 4018489 is a prime.

It is a super-2 number, since 2×4018493² = 32296571982098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4018403) 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 3 ways as a sum of consecutive naturals, for example, 25355 + ... + 25512.

It is an arithmetic number, because the mean of its divisors is an integer number (1017360).

Almost surely, 2^4018493 is an apocalyptic number.

It is an amenable number.

4018493 is a deficient number, since it is larger than the sum of its proper divisors (50947).

4018493 is an equidigital number, since it uses as much as digits as its factorization.

4018493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50946.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 4018493 is about 2004.6179187067. The cubic root of 4018493 is about 158.9843608947.

The spelling of 4018493 in words is "four million, eighteen thousand, four hundred ninety-three".