6401790936 has 80 divisors (see below), whose sum is σ = 17961966000. Its totient is φ = 2130238656.

The previous prime is 6401790917. The next prime is 6401790971. The reversal of 6401790936 is 6390971046.

It is a junction number, because it is equal to n+sod(n) for n = 6401790891 and 6401790900.

It is a congruent number.

It is an unprimeable number.

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 in 19 ways as a sum of consecutive naturals, for example, 379906 + ... + 396398.

It is an arithmetic number, because the mean of its divisors is an integer number (224524575).

Almost surely, 2^6401790936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6401790936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8980983000).

6401790936 is an abundant number, since it is smaller than the sum of its proper divisors (11560175064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6401790936 is a wasteful number, since it uses less digits than its factorization.

6401790936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17110 (or 17097 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 6401790936 is about 80011.1925670403. The cubic root of 6401790936 is about 1856.8087003880.

The spelling of 6401790936 in words is "six billion, four hundred one million, seven hundred ninety thousand, nine hundred thirty-six".