3890712643 has 2 divisors, whose sum is σ = 3890712644. Its totient is φ = 3890712642.

The previous prime is 3890712601. The next prime is 3890712647. The reversal of 3890712643 is 3462170983.

It is a strong prime.

It is an emirp because it is prime and its reverse (3462170983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3890712643 - 2²¹ = 3888615491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3890712643.

It is not a weakly prime, because it can be changed into another prime (3890712647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1945356321 + 1945356322.

It is an arithmetic number, because the mean of its divisors is an integer number (1945356322).

Almost surely, 2^3890712643 is an apocalyptic number.

3890712643 is a deficient number, since it is larger than the sum of its proper divisors (1).

3890712643 is an equidigital number, since it uses as much as digits as its factorization.

3890712643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 3890712643 is about 62375.5772959257. The cubic root of 3890712643 is about 1572.8104477959.

The spelling of 3890712643 in words is "three billion, eight hundred ninety million, seven hundred twelve thousand, six hundred forty-three".