1992085787 has 2 divisors, whose sum is σ = 1992085788. Its totient is φ = 1992085786.

The previous prime is 1992085769. The next prime is 1992085801. The reversal of 1992085787 is 7875802991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1992085787 - 2¹⁸ = 1991823643 is a prime.

It is not a weakly prime, because it can be changed into another prime (1992085717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996042893 + 996042894.

It is an arithmetic number, because the mean of its divisors is an integer number (996042894).

Almost surely, 2^1992085787 is an apocalyptic number.

1992085787 is a deficient number, since it is larger than the sum of its proper divisors (1).

1992085787 is an equidigital number, since it uses as much as digits as its factorization.

1992085787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2540160, while the sum is 56.

The square root of 1992085787 is about 44632.7882503435. The cubic root of 1992085787 is about 1258.2569723916.

The spelling of 1992085787 in words is "one billion, nine hundred ninety-two million, eighty-five thousand, seven hundred eighty-seven".