6243952381 has 2 divisors, whose sum is σ = 6243952382. Its totient is φ = 6243952380.

The previous prime is 6243952343. The next prime is 6243952399. The reversal of 6243952381 is 1832593426.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6235629156 + 8323225 = 78966^2 + 2885^2 .

It is a cyclic number.

It is not a de Polignac number, because 6243952381 - 2²¹ = 6241855229 is a prime.

It is a super-2 number, since 2×6243952381² = 77973882672391138322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6243950381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3121976190 + 3121976191.

It is an arithmetic number, because the mean of its divisors is an integer number (3121976191).

Almost surely, 2^6243952381 is an apocalyptic number.

It is an amenable number.

6243952381 is a deficient number, since it is larger than the sum of its proper divisors (1).

6243952381 is an equidigital number, since it uses as much as digits as its factorization.

6243952381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 43.

The square root of 6243952381 is about 79018.6837463141. The cubic root of 6243952381 is about 1841.4214344185.

The spelling of 6243952381 in words is "six billion, two hundred forty-three million, nine hundred fifty-two thousand, three hundred eighty-one".