3018749 has 4 divisors (see below), whose sum is σ = 3116160. Its totient is φ = 2921340.

The previous prime is 3018733. The next prime is 3018803. The reversal of 3018749 is 9478103.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9478103 = 43 ⋅220421.

It is a cyclic number.

It is not a de Polignac number, because 3018749 - 2⁴ = 3018733 is a prime.

It is a super-2 number, since 2×3018749² = 18225691050002, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3018709) 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, 48659 + ... + 48720.

It is an arithmetic number, because the mean of its divisors is an integer number (779040).

Almost surely, 2^3018749 is an apocalyptic number.

It is an amenable number.

3018749 is a deficient number, since it is larger than the sum of its proper divisors (97411).

3018749 is an equidigital number, since it uses as much as digits as its factorization.

3018749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97410.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 3018749 is about 1737.4547476122. The cubic root of 3018749 is about 144.5247859208.

The spelling of 3018749 in words is "three million, eighteen thousand, seven hundred forty-nine".