6456737893 has 2 divisors, whose sum is σ = 6456737894. Its totient is φ = 6456737892.

The previous prime is 6456737761. The next prime is 6456737897. The reversal of 6456737893 is 3987376546.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5756712129 + 700025764 = 75873^2 + 26458^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6456737893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6456737897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3228368946 + 3228368947.

It is an arithmetic number, because the mean of its divisors is an integer number (3228368947).

Almost surely, 2^6456737893 is an apocalyptic number.

It is an amenable number.

6456737893 is a deficient number, since it is larger than the sum of its proper divisors (1).

6456737893 is an equidigital number, since it uses as much as digits as its factorization.

6456737893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22861440, while the sum is 58.

The square root of 6456737893 is about 80353.8293611449. The cubic root of 6456737893 is about 1862.1059406135.

The spelling of 6456737893 in words is "six billion, four hundred fifty-six million, seven hundred thirty-seven thousand, eight hundred ninety-three".