18611441803 has 2 divisors, whose sum is σ = 18611441804. Its totient is φ = 18611441802.

The previous prime is 18611441791. The next prime is 18611441819. The reversal of 18611441803 is 30814411681.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18611441803 - 2¹³ = 18611433611 is a prime.

It is not a weakly prime, because it can be changed into another prime (18611441903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9305720901 + 9305720902.

It is an arithmetic number, because the mean of its divisors is an integer number (9305720902).

Almost surely, 2^18611441803 is an apocalyptic number.

18611441803 is a deficient number, since it is larger than the sum of its proper divisors (1).

18611441803 is an equidigital number, since it uses as much as digits as its factorization.

18611441803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 37.

The spelling of 18611441803 in words is "eighteen billion, six hundred eleven million, four hundred forty-one thousand, eight hundred three".