6405910922 has 4 divisors (see below), whose sum is σ = 9608866386. Its totient is φ = 3202955460.

The previous prime is 6405910883. The next prime is 6405910967. The reversal of 6405910922 is 2290195046.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4479491041 + 1926419881 = 66929^2 + 43891^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1601477729 + ... + 1601477732.

Almost surely, 2^6405910922 is an apocalyptic number.

6405910922 is a deficient number, since it is larger than the sum of its proper divisors (3202955464).

6405910922 is a wasteful number, since it uses less digits than its factorization.

6405910922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3202955463.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 6405910922 is about 80036.9347364078. The cubic root of 6405910922 is about 1857.2069423493.

The spelling of 6405910922 in words is "six billion, four hundred five million, nine hundred ten thousand, nine hundred twenty-two".