18634741 has 2 divisors, whose sum is σ = 18634742. Its totient is φ = 18634740.

The previous prime is 18634709. The next prime is 18634753. The reversal of 18634741 is 14743681.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18309841 + 324900 = 4279^2 + 570^2 .

It is a cyclic number.

It is not a de Polignac number, because 18634741 - 2⁵ = 18634709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18634697 and 18634706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18634141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9317370 + 9317371.

It is an arithmetic number, because the mean of its divisors is an integer number (9317371).

Almost surely, 2^18634741 is an apocalyptic number.

It is an amenable number.

18634741 is a deficient number, since it is larger than the sum of its proper divisors (1).

18634741 is an equidigital number, since it uses as much as digits as its factorization.

18634741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 34.

The square root of 18634741 is about 4316.7975398436. The cubic root of 18634741 is about 265.1191632107.

The spelling of 18634741 in words is "eighteen million, six hundred thirty-four thousand, seven hundred forty-one".