1654341889 has 2 divisors, whose sum is σ = 1654341890. Its totient is φ = 1654341888.

The previous prime is 1654341863. The next prime is 1654341929. The reversal of 1654341889 is 9881434561.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1048788225 + 605553664 = 32385^2 + 24608^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1654341889 is a prime.

It is not a weakly prime, because it can be changed into another prime (1654341839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 827170944 + 827170945.

It is an arithmetic number, because the mean of its divisors is an integer number (827170945).

Almost surely, 2^1654341889 is an apocalyptic number.

It is an amenable number.

1654341889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1654341889 is an equidigital number, since it uses as much as digits as its factorization.

1654341889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 829440, while the sum is 49.

The square root of 1654341889 is about 40673.6018690256. The cubic root of 1654341889 is about 1182.7013399089.

The spelling of 1654341889 in words is "one billion, six hundred fifty-four million, three hundred forty-one thousand, eight hundred eighty-nine".