6780001913 has 2 divisors, whose sum is σ = 6780001914. Its totient is φ = 6780001912.

The previous prime is 6780001903. The next prime is 6780001957. The reversal of 6780001913 is 3191000876.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6530740969 + 249260944 = 80813^2 + 15788^2 .

It is a cyclic number.

It is not a de Polignac number, because 6780001913 - 2¹⁴ = 6779985529 is a prime.

It is not a weakly prime, because it can be changed into another prime (6780001903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3390000956 + 3390000957.

It is an arithmetic number, because the mean of its divisors is an integer number (3390000957).

Almost surely, 2^6780001913 is an apocalyptic number.

It is an amenable number.

6780001913 is a deficient number, since it is larger than the sum of its proper divisors (1).

6780001913 is an equidigital number, since it uses as much as digits as its factorization.

6780001913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 6780001913 is about 82340.7670173165. The cubic root of 6780001913 is about 1892.6774397293.

The spelling of 6780001913 in words is "six billion, seven hundred eighty million, one thousand, nine hundred thirteen".