4123617391 has 2 divisors, whose sum is σ = 4123617392. Its totient is φ = 4123617390.

The previous prime is 4123617383. The next prime is 4123617401. The reversal of 4123617391 is 1937163214.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4123617391 - 2³ = 4123617383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4123617391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4123617361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2061808695 + 2061808696.

It is an arithmetic number, because the mean of its divisors is an integer number (2061808696).

Almost surely, 2^4123617391 is an apocalyptic number.

4123617391 is a deficient number, since it is larger than the sum of its proper divisors (1).

4123617391 is an equidigital number, since it uses as much as digits as its factorization.

4123617391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 37.

The square root of 4123617391 is about 64215.3983947776. The cubic root of 4123617391 is about 1603.5879625170.

The spelling of 4123617391 in words is "four billion, one hundred twenty-three million, six hundred seventeen thousand, three hundred ninety-one".