6148978657 has 8 divisors (see below), whose sum is σ = 6162480000. Its totient is φ = 6135490944.

The previous prime is 6148978621. The next prime is 6148978679. The reversal of 6148978657 is 7568798416.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6148978657 - 2⁷ = 6148978529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6148978595 and 6148978604.

It is not an unprimeable number, because it can be changed into a prime (6148978697) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1938769 + ... + 1941937.

It is an arithmetic number, because the mean of its divisors is an integer number (770310000).

Almost surely, 2^6148978657 is an apocalyptic number.

It is an amenable number.

6148978657 is a deficient number, since it is larger than the sum of its proper divisors (13501343).

6148978657 is a wasteful number, since it uses less digits than its factorization.

6148978657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6815.

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

The square root of 6148978657 is about 78415.4235912808. The cubic root of 6148978657 is about 1832.0373714949.

The spelling of 6148978657 in words is "six billion, one hundred forty-eight million, nine hundred seventy-eight thousand, six hundred fifty-seven".