1992365987 has 2 divisors, whose sum is σ = 1992365988. Its totient is φ = 1992365986.

The previous prime is 1992365971. The next prime is 1992365993. The reversal of 1992365987 is 7895632991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1992365987 - 2⁴ = 1992365971 is a prime.

It is not a weakly prime, because it can be changed into another prime (1992365927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996182993 + 996182994.

It is an arithmetic number, because the mean of its divisors is an integer number (996182994).

Almost surely, 2^1992365987 is an apocalyptic number.

1992365987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1992365987 is an equidigital number, since it uses as much as digits as its factorization.

1992365987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7348320, while the sum is 59.

The square root of 1992365987 is about 44635.9270879412. The cubic root of 1992365987 is about 1258.3159636721.

The spelling of 1992365987 in words is "one billion, nine hundred ninety-two million, three hundred sixty-five thousand, nine hundred eighty-seven".