992085187 has 2 divisors, whose sum is σ = 992085188. Its totient is φ = 992085186.

The previous prime is 992085179. The next prime is 992085223. The reversal of 992085187 is 781580299.

It is a weak prime.

It is an emirp because it is prime and its reverse (781580299) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 992085187 - 2³ = 992085179 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 992085187.

It is not a weakly prime, because it can be changed into another prime (992085137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496042593 + 496042594.

It is an arithmetic number, because the mean of its divisors is an integer number (496042594).

Almost surely, 2^992085187 is an apocalyptic number.

992085187 is a deficient number, since it is larger than the sum of its proper divisors (1).

992085187 is an equidigital number, since it uses as much as digits as its factorization.

992085187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 49.

The square root of 992085187 is about 31497.3838119930. The cubic root of 992085187 is about 997.3547377577.

The spelling of 992085187 in words is "nine hundred ninety-two million, eighty-five thousand, one hundred eighty-seven".