1298333887 has 2 divisors, whose sum is σ = 1298333888. Its totient is φ = 1298333886.

The previous prime is 1298333867. The next prime is 1298333893. The reversal of 1298333887 is 7883338921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1298333887 - 2⁷ = 1298333759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1298333837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649166943 + 649166944.

It is an arithmetic number, because the mean of its divisors is an integer number (649166944).

Almost surely, 2^1298333887 is an apocalyptic number.

1298333887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1298333887 is an equidigital number, since it uses as much as digits as its factorization.

1298333887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 52.

The square root of 1298333887 is about 36032.4005167571. The cubic root of 1298333887 is about 1090.9264314577.

The spelling of 1298333887 in words is "one billion, two hundred ninety-eight million, three hundred thirty-three thousand, eight hundred eighty-seven".