6148977917 has 2 divisors, whose sum is σ = 6148977918. Its totient is φ = 6148977916.

The previous prime is 6148977907. The next prime is 6148977929. The reversal of 6148977917 is 7197798416.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5010657796 + 1138320121 = 70786^2 + 33739^2 .

It is a cyclic number.

It is not a de Polignac number, because 6148977917 - 2⁶ = 6148977853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6148977907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3074488958 + 3074488959.

It is an arithmetic number, because the mean of its divisors is an integer number (3074488959).

Almost surely, 2^6148977917 is an apocalyptic number.

It is an amenable number.

6148977917 is a deficient number, since it is larger than the sum of its proper divisors (1).

6148977917 is an equidigital number, since it uses as much as digits as its factorization.

6148977917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5334336, while the sum is 59.

The square root of 6148977917 is about 78415.4188728212. The cubic root of 6148977917 is about 1832.0372980026.

The spelling of 6148977917 in words is "six billion, one hundred forty-eight million, nine hundred seventy-seven thousand, nine hundred seventeen".