3218890747 has 2 divisors, whose sum is σ = 3218890748. Its totient is φ = 3218890746.

The previous prime is 3218890691. The next prime is 3218890769. The reversal of 3218890747 is 7470988123.

It is a strong prime.

It is an emirp because it is prime and its reverse (7470988123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3218890747 - 2²⁷ = 3084673019 is a prime.

It is a super-2 number, since 2×3218890747² = 20722515282244436018, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3218890747.

It is not a weakly prime, because it can be changed into another prime (3218890247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1609445373 + 1609445374.

It is an arithmetic number, because the mean of its divisors is an integer number (1609445374).

Almost surely, 2^3218890747 is an apocalyptic number.

3218890747 is a deficient number, since it is larger than the sum of its proper divisors (1).

3218890747 is an equidigital number, since it uses as much as digits as its factorization.

3218890747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 3218890747 is about 56735.2689867599. The cubic root of 3218890747 is about 1476.5066664577.

The spelling of 3218890747 in words is "three billion, two hundred eighteen million, eight hundred ninety thousand, seven hundred forty-seven".