6402819131 has 2 divisors, whose sum is σ = 6402819132. Its totient is φ = 6402819130.

The previous prime is 6402819103. The next prime is 6402819167. The reversal of 6402819131 is 1319182046.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6402819131 - 2¹⁸ = 6402556987 is a prime.

It is a super-2 number, since 2×6402819131² = 81992185648599190322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6402819091 and 6402819100.

It is not a weakly prime, because it can be changed into another prime (6402809131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3201409565 + 3201409566.

It is an arithmetic number, because the mean of its divisors is an integer number (3201409566).

Almost surely, 2^6402819131 is an apocalyptic number.

6402819131 is a deficient number, since it is larger than the sum of its proper divisors (1).

6402819131 is an equidigital number, since it uses as much as digits as its factorization.

6402819131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 6402819131 is about 80017.6176288697. The cubic root of 6402819131 is about 1856.9081027396.

The spelling of 6402819131 in words is "six billion, four hundred two million, eight hundred nineteen thousand, one hundred thirty-one".