3691618165867 has 2 divisors, whose sum is σ = 3691618165868. Its totient is φ = 3691618165866.

The previous prime is 3691618165831. The next prime is 3691618165877. The reversal of 3691618165867 is 7685618161963.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3691618165867 is a prime.

It is not a weakly prime, because it can be changed into another prime (3691618165877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1845809082933 + 1845809082934.

It is an arithmetic number, because the mean of its divisors is an integer number (1845809082934).

Almost surely, 2^{3691618165867} is an apocalyptic number.

3691618165867 is a deficient number, since it is larger than the sum of its proper divisors (1).

3691618165867 is an equidigital number, since it uses as much as digits as its factorization.

3691618165867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78382080, while the sum is 67.

The spelling of 3691618165867 in words is "three trillion, six hundred ninety-one billion, six hundred eighteen million, one hundred sixty-five thousand, eight hundred sixty-seven".