187440742823 has 2 divisors, whose sum is σ = 187440742824. Its totient is φ = 187440742822.

The previous prime is 187440742771. The next prime is 187440742831. The reversal of 187440742823 is 328247044781.

187440742823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 187440742823 - 2²⁸ = 187172307367 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (187440732823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93720371411 + 93720371412.

It is an arithmetic number, because the mean of its divisors is an integer number (93720371412).

Almost surely, 2^187440742823 is an apocalyptic number.

187440742823 is a deficient number, since it is larger than the sum of its proper divisors (1).

187440742823 is an equidigital number, since it uses as much as digits as its factorization.

187440742823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2408448, while the sum is 50.

The spelling of 187440742823 in words is "one hundred eighty-seven billion, four hundred forty million, seven hundred forty-two thousand, eight hundred twenty-three".