6342738257 has 2 divisors, whose sum is σ = 6342738258. Its totient is φ = 6342738256.

The previous prime is 6342738217. The next prime is 6342738307. The reversal of 6342738257 is 7528372436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5487994561 + 854743696 = 74081^2 + 29236^2 .

It is a cyclic number.

It is not a de Polignac number, because 6342738257 - 2⁸ = 6342738001 is a prime.

It is a super-2 number, since 2×6342738257² = 80460657193622796098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6342738217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3171369128 + 3171369129.

It is an arithmetic number, because the mean of its divisors is an integer number (3171369129).

Almost surely, 2^6342738257 is an apocalyptic number.

It is an amenable number.

6342738257 is a deficient number, since it is larger than the sum of its proper divisors (1).

6342738257 is an equidigital number, since it uses as much as digits as its factorization.

6342738257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1693440, while the sum is 47.

The square root of 6342738257 is about 79641.3099904817. The cubic root of 6342738257 is about 1851.0817396000.

The spelling of 6342738257 in words is "six billion, three hundred forty-two million, seven hundred thirty-eight thousand, two hundred fifty-seven".