6408642937 has 2 divisors, whose sum is σ = 6408642938. Its totient is φ = 6408642936.

The previous prime is 6408642887. The next prime is 6408642941. The reversal of 6408642937 is 7392468046.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4470794496 + 1937848441 = 66864^2 + 44021^2 .

It is a cyclic number.

It is not a de Polignac number, because 6408642937 - 2³¹ = 4261159289 is a prime.

It is not a weakly prime, because it can be changed into another prime (6408642997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3204321468 + 3204321469.

It is an arithmetic number, because the mean of its divisors is an integer number (3204321469).

Almost surely, 2^6408642937 is an apocalyptic number.

It is an amenable number.

6408642937 is a deficient number, since it is larger than the sum of its proper divisors (1).

6408642937 is an equidigital number, since it uses as much as digits as its factorization.

6408642937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 49.

The square root of 6408642937 is about 80054.0001311615. Note that the first 3 decimals coincide. The cubic root of 6408642937 is about 1857.4709275000.

The spelling of 6408642937 in words is "six billion, four hundred eight million, six hundred forty-two thousand, nine hundred thirty-seven".