6402819122 has 54 divisors (see below), whose sum is σ = 11448396477. Its totient is φ = 2677865568.

The previous prime is 6402819103. The next prime is 6402819131. The reversal of 6402819122 is 2219182046.

It can be written as a sum of positive squares in 2 ways, for example, as 6353524681 + 49294441 = 79709^2 + 7021^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=56581.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 46735838 + ... + 46735974.

Almost surely, 2^6402819122 is an apocalyptic number.

6402819122 is a deficient number, since it is larger than the sum of its proper divisors (5045577355).

6402819122 is an equidigital number, since it uses as much as digits as its factorization.

6402819122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 6402819122 is about 80017.6175726321. The cubic root of 6402819122 is about 1856.9081018696.

The spelling of 6402819122 in words is "six billion, four hundred two million, eight hundred nineteen thousand, one hundred twenty-two".