187240742833 has 2 divisors, whose sum is σ = 187240742834. Its totient is φ = 187240742832.

The previous prime is 187240742807. The next prime is 187240742837. The reversal of 187240742833 is 338247042781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160294535424 + 26946207409 = 400368^2 + 164153^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-187240742833 is a prime.

It is not a weakly prime, because it can be changed into another prime (187240742837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93620371416 + 93620371417.

It is an arithmetic number, because the mean of its divisors is an integer number (93620371417).

Almost surely, 2^187240742833 is an apocalyptic number.

It is an amenable number.

187240742833 is a deficient number, since it is larger than the sum of its proper divisors (1).

187240742833 is an equidigital number, since it uses as much as digits as its factorization.

187240742833 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1806336, while the sum is 49.

The spelling of 187240742833 in words is "one hundred eighty-seven billion, two hundred forty million, seven hundred forty-two thousand, eight hundred thirty-three".