18732541 has 2 divisors, whose sum is σ = 18732542. Its totient is φ = 18732540.

The previous prime is 18732523. The next prime is 18732547. The reversal of 18732541 is 14523781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13764100 + 4968441 = 3710^2 + 2229^2 .

It is a cyclic number.

It is not a de Polignac number, because 18732541 - 2⁵ = 18732509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18732547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9366270 + 9366271.

It is an arithmetic number, because the mean of its divisors is an integer number (9366271).

Almost surely, 2^18732541 is an apocalyptic number.

It is an amenable number.

18732541 is a deficient number, since it is larger than the sum of its proper divisors (1).

18732541 is an equidigital number, since it uses as much as digits as its factorization.

18732541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 31.

The square root of 18732541 is about 4328.1105577376. The cubic root of 18732541 is about 265.5821591070.

The spelling of 18732541 in words is "eighteen million, seven hundred thirty-two thousand, five hundred forty-one".