6815789401 has 4 divisors (see below), whose sum is σ = 6820386832. Its totient is φ = 6811191972.

The previous prime is 6815789399. The next prime is 6815789419. The reversal of 6815789401 is 1049875186.

6815789401 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6815789401 - 2¹ = 6815789399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6815789501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2296491 + ... + 2299456.

It is an arithmetic number, because the mean of its divisors is an integer number (1705096708).

Almost surely, 2^6815789401 is an apocalyptic number.

It is an amenable number.

6815789401 is a deficient number, since it is larger than the sum of its proper divisors (4597431).

6815789401 is a wasteful number, since it uses less digits than its factorization.

6815789401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4597430.

The product of its (nonzero) digits is 483840, while the sum is 49.

The square root of 6815789401 is about 82557.7943079877. The cubic root of 6815789401 is about 1896.0016936410.

The spelling of 6815789401 in words is "six billion, eight hundred fifteen million, seven hundred eighty-nine thousand, four hundred one".