6426831938 has 6 divisors (see below), whose sum is σ = 9640417971. Its totient is φ = 3213359282.

The previous prime is 6426831913. The next prime is 6426831953. The reversal of 6426831938 is 8391386246.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3213415969 + 3213415969 = 56687^2 + 56687^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=56687.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 85031 + ... + 141717.

Almost surely, 2^6426831938 is an apocalyptic number.

6426831938 is a deficient number, since it is larger than the sum of its proper divisors (3213586033).

6426831938 is an frugal number, since it uses more digits than its factorization.

6426831938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113376 (or 56689 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 50.

The square root of 6426831938 is about 80167.5242102436. The cubic root of 6426831938 is about 1859.2265580257.

Multiplying 6426831938 by its sum of digits (50), we get a square (321341596900 = 566870²).

The spelling of 6426831938 in words is "six billion, four hundred twenty-six million, eight hundred thirty-one thousand, nine hundred thirty-eight".