1385416949779 has 2 divisors, whose sum is σ = 1385416949780. Its totient is φ = 1385416949778.

The previous prime is 1385416949729. The next prime is 1385416949783. The reversal of 1385416949779 is 9779496145831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1385416949779 - 2³⁵ = 1351057211411 is a prime.

It is not a weakly prime, because it can be changed into another prime (1385416949729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 692708474889 + 692708474890.

It is an arithmetic number, because the mean of its divisors is an integer number (692708474890).

Almost surely, 2^{1385416949779} is an apocalyptic number.

1385416949779 is a deficient number, since it is larger than the sum of its proper divisors (1).

1385416949779 is an equidigital number, since it uses as much as digits as its factorization.

1385416949779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 411505920, while the sum is 73.

The spelling of 1385416949779 in words is "one trillion, three hundred eighty-five billion, four hundred sixteen million, nine hundred forty-nine thousand, seven hundred seventy-nine".