6178456789 has 4 divisors (see below), whose sum is σ = 6179793280. Its totient is φ = 6177120300.

The previous prime is 6178456787. The next prime is 6178456793. The reversal of 6178456789 is 9876548716.

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 6178456789 - 2¹ = 6178456787 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6178456787) 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, 661287 + ... + 670564.

It is an arithmetic number, because the mean of its divisors is an integer number (1544948320).

Almost surely, 2^6178456789 is an apocalyptic number.

It is an amenable number.

6178456789 is a deficient number, since it is larger than the sum of its proper divisors (1336491).

6178456789 is a wasteful number, since it uses less digits than its factorization.

6178456789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336490.

The product of its digits is 20321280, while the sum is 61.

The square root of 6178456789 is about 78603.1601718404. The cubic root of 6178456789 is about 1834.9602942404.

The spelling of 6178456789 in words is "six billion, one hundred seventy-eight million, four hundred fifty-six thousand, seven hundred eighty-nine".