5868938921 has 2 divisors, whose sum is σ = 5868938922. Its totient is φ = 5868938920.

The previous prime is 5868938903. The next prime is 5868938923. The reversal of 5868938921 is 1298398685.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5801107225 + 67831696 = 76165^2 + 8236^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5868938921 is a prime.

Together with 5868938923, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5868938923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2934469460 + 2934469461.

It is an arithmetic number, because the mean of its divisors is an integer number (2934469461).

Almost surely, 2^5868938921 is an apocalyptic number.

It is an amenable number.

5868938921 is a deficient number, since it is larger than the sum of its proper divisors (1).

5868938921 is an equidigital number, since it uses as much as digits as its factorization.

5868938921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7464960, while the sum is 59.

The square root of 5868938921 is about 76609.0002610659. Note that the first 3 decimals coincide. The cubic root of 5868938921 is about 1803.7923051377.

The spelling of 5868938921 in words is "five billion, eight hundred sixty-eight million, nine hundred thirty-eight thousand, nine hundred twenty-one".