4918391 has 2 divisors, whose sum is σ = 4918392. Its totient is φ = 4918390.

The previous prime is 4918387. The next prime is 4918399. The reversal of 4918391 is 1938194.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4918391 - 2² = 4918387 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4918399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2459195 + 2459196.

It is an arithmetic number, because the mean of its divisors is an integer number (2459196).

Almost surely, 2^4918391 is an apocalyptic number.

4918391 is a deficient number, since it is larger than the sum of its proper divisors (1).

4918391 is an equidigital number, since it uses as much as digits as its factorization.

4918391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 35.

The square root of 4918391 is about 2217.7445750131. The cubic root of 4918391 is about 170.0621572015.

The spelling of 4918391 in words is "four million, nine hundred eighteen thousand, three hundred ninety-one".