18500941 has 2 divisors, whose sum is σ = 18500942. Its totient is φ = 18500940.

The previous prime is 18500929. The next prime is 18500983. The reversal of 18500941 is 14900581.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15093225 + 3407716 = 3885^2 + 1846^2 .

It is a cyclic number.

It is not a de Polignac number, because 18500941 - 2¹⁵ = 18468173 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 (18500921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9250470 + 9250471.

It is an arithmetic number, because the mean of its divisors is an integer number (9250471).

Almost surely, 2^18500941 is an apocalyptic number.

It is an amenable number.

18500941 is a deficient number, since it is larger than the sum of its proper divisors (1).

18500941 is an equidigital number, since it uses as much as digits as its factorization.

18500941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 18500941 is about 4301.2720211584. The cubic root of 18500941 is about 264.4831077818.

The spelling of 18500941 in words is "eighteen million, five hundred thousand, nine hundred forty-one".