1992189427 has 2 divisors, whose sum is σ = 1992189428. Its totient is φ = 1992189426.

The previous prime is 1992189379. The next prime is 1992189449. The reversal of 1992189427 is 7249812991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1992189427 - 2⁷ = 1992189299 is a prime.

It is not a weakly prime, because it can be changed into another prime (1992189127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996094713 + 996094714.

It is an arithmetic number, because the mean of its divisors is an integer number (996094714).

Almost surely, 2^1992189427 is an apocalyptic number.

1992189427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1992189427 is an equidigital number, since it uses as much as digits as its factorization.

1992189427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 52.

The square root of 1992189427 is about 44633.9492651054. The cubic root of 1992189427 is about 1258.2787926519.

The spelling of 1992189427 in words is "one billion, nine hundred ninety-two million, one hundred eighty-nine thousand, four hundred twenty-seven".