187892715649 has 8 divisors (see below), whose sum is σ = 188407683072. Its totient is φ = 187377876000.

The previous prime is 187892715607. The next prime is 187892715653. The reversal of 187892715649 is 946517298781.

187892715649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 187892715649 - 2³³ = 179302781057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (187892785649) 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 in 7 ways as a sum of consecutive naturals, for example, 3420132 + ... + 3474634.

It is an arithmetic number, because the mean of its divisors is an integer number (23550960384).

Almost surely, 2^187892715649 is an apocalyptic number.

It is an amenable number.

187892715649 is a deficient number, since it is larger than the sum of its proper divisors (514967423).

187892715649 is an equidigital number, since it uses as much as digits as its factorization.

187892715649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63887.

The product of its digits is 60963840, while the sum is 67.

The spelling of 187892715649 in words is "one hundred eighty-seven billion, eight hundred ninety-two million, seven hundred fifteen thousand, six hundred forty-nine".