187545124493 has 2 divisors, whose sum is σ = 187545124494. Its totient is φ = 187545124492.

The previous prime is 187545124477. The next prime is 187545124523. The reversal of 187545124493 is 394421545781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185930852809 + 1614271684 = 431197^2 + 40178^2 .

It is a cyclic number.

It is not a de Polignac number, because 187545124493 - 2⁴ = 187545124477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (187545124463) 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, 93772562246 + 93772562247.

It is an arithmetic number, because the mean of its divisors is an integer number (93772562247).

Almost surely, 2^187545124493 is an apocalyptic number.

It is an amenable number.

187545124493 is a deficient number, since it is larger than the sum of its proper divisors (1).

187545124493 is an equidigital number, since it uses as much as digits as its factorization.

187545124493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4838400, while the sum is 53.

The spelling of 187545124493 in words is "one hundred eighty-seven billion, five hundred forty-five million, one hundred twenty-four thousand, four hundred ninety-three".