1865746738811 has 2 divisors, whose sum is σ = 1865746738812. Its totient is φ = 1865746738810.

The previous prime is 1865746738787. The next prime is 1865746738813. The reversal of 1865746738811 is 1188376475681.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1865746738811 is a prime.

Together with 1865746738813, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1865746738813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 932873369405 + 932873369406.

It is an arithmetic number, because the mean of its divisors is an integer number (932873369406).

Almost surely, 2^{1865746738811} is an apocalyptic number.

1865746738811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1865746738811 is an equidigital number, since it uses as much as digits as its factorization.

1865746738811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54190080, while the sum is 65.

The spelling of 1865746738811 in words is "one trillion, eight hundred sixty-five billion, seven hundred forty-six million, seven hundred thirty-eight thousand, eight hundred eleven".