938064643 has 2 divisors, whose sum is σ = 938064644. Its totient is φ = 938064642.

The previous prime is 938064577. The next prime is 938064661. The reversal of 938064643 is 346460839.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-938064643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 938064643.

It is not a weakly prime, because it can be changed into another prime (938065643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469032321 + 469032322.

It is an arithmetic number, because the mean of its divisors is an integer number (469032322).

Almost surely, 2^938064643 is an apocalyptic number.

938064643 is a deficient number, since it is larger than the sum of its proper divisors (1).

938064643 is an equidigital number, since it uses as much as digits as its factorization.

938064643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 43.

The square root of 938064643 is about 30627.8409784301. The cubic root of 938064643 is about 978.9133599787.

The spelling of 938064643 in words is "nine hundred thirty-eight million, sixty-four thousand, six hundred forty-three".