4638791 has 2 divisors, whose sum is σ = 4638792. Its totient is φ = 4638790.

The previous prime is 4638761. The next prime is 4638827. The reversal of 4638791 is 1978364.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4638791 - 2²² = 444487 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 (4638721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2319395 + 2319396.

It is an arithmetic number, because the mean of its divisors is an integer number (2319396).

Almost surely, 2^4638791 is an apocalyptic number.

4638791 is a deficient number, since it is larger than the sum of its proper divisors (1).

4638791 is an equidigital number, since it uses as much as digits as its factorization.

4638791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 38.

The square root of 4638791 is about 2153.7852724912. The cubic root of 4638791 is about 166.7765306746.

The spelling of 4638791 in words is "four million, six hundred thirty-eight thousand, seven hundred ninety-one".