1368529889 has 2 divisors, whose sum is σ = 1368529890. Its totient is φ = 1368529888.

The previous prime is 1368529867. The next prime is 1368529933. The reversal of 1368529889 is 9889258631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1068963025 + 299566864 = 32695^2 + 17308^2 .

It is a cyclic number.

It is not a de Polignac number, because 1368529889 - 2¹² = 1368525793 is a prime.

It is not a weakly prime, because it can be changed into another prime (1368529829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 684264944 + 684264945.

It is an arithmetic number, because the mean of its divisors is an integer number (684264945).

Almost surely, 2^1368529889 is an apocalyptic number.

It is an amenable number.

1368529889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1368529889 is an equidigital number, since it uses as much as digits as its factorization.

1368529889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7464960, while the sum is 59.

The square root of 1368529889 is about 36993.6466031669. The cubic root of 1368529889 is about 1110.2431328997.

The spelling of 1368529889 in words is "one billion, three hundred sixty-eight million, five hundred twenty-nine thousand, eight hundred eighty-nine".