3018949 has 2 divisors, whose sum is σ = 3018950. Its totient is φ = 3018948.

The previous prime is 3018947. The next prime is 3018989. The reversal of 3018949 is 9498103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2873025 + 145924 = 1695^2 + 382^2 .

It is a cyclic number.

It is not a de Polignac number, because 3018949 - 2¹ = 3018947 is a prime.

It is a super-2 number, since 2×3018949² = 18228106129202, which contains 22 as substring.

Together with 3018947, it forms a pair of twin primes.

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

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3018947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1509474 + 1509475.

It is an arithmetic number, because the mean of its divisors is an integer number (1509475).

Almost surely, 2^3018949 is an apocalyptic number.

It is an amenable number.

3018949 is a deficient number, since it is larger than the sum of its proper divisors (1).

3018949 is an equidigital number, since it uses as much as digits as its factorization.

3018949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 3018949 is about 1737.5123021147. The cubic root of 3018949 is about 144.5279775651.

The spelling of 3018949 in words is "three million, eighteen thousand, nine hundred forty-nine".