18752641 has 2 divisors, whose sum is σ = 18752642. Its totient is φ = 18752640.

The previous prime is 18752611. The next prime is 18752651. The reversal of 18752641 is 14625781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18455616 + 297025 = 4296^2 + 545^2 .

It is an emirp because it is prime and its reverse (14625781) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18752641 - 2⁵ = 18752609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18752597 and 18752606.

It is not a weakly prime, because it can be changed into another prime (18752611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9376320 + 9376321.

It is an arithmetic number, because the mean of its divisors is an integer number (9376321).

Almost surely, 2^18752641 is an apocalyptic number.

It is an amenable number.

18752641 is a deficient number, since it is larger than the sum of its proper divisors (1).

18752641 is an equidigital number, since it uses as much as digits as its factorization.

18752641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 34.

The square root of 18752641 is about 4330.4319645966. The cubic root of 18752641 is about 265.6771149602.

The spelling of 18752641 in words is "eighteen million, seven hundred fifty-two thousand, six hundred forty-one".