361819867 has 2 divisors, whose sum is σ = 361819868. Its totient is φ = 361819866.

The previous prime is 361819859. The next prime is 361819889. The reversal of 361819867 is 768918163.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 361819867 - 2³ = 361819859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 361819867.

It is not a weakly prime, because it can be changed into another prime (361819837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180909933 + 180909934.

It is an arithmetic number, because the mean of its divisors is an integer number (180909934).

Almost surely, 2^361819867 is an apocalyptic number.

361819867 is a deficient number, since it is larger than the sum of its proper divisors (1).

361819867 is an equidigital number, since it uses as much as digits as its factorization.

361819867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 49.

The square root of 361819867 is about 19021.5632112611. The cubic root of 361819867 is about 712.5753638144.

The spelling of 361819867 in words is "three hundred sixty-one million, eight hundred nineteen thousand, eight hundred sixty-seven".