1368999871 has 2 divisors, whose sum is σ = 1368999872. Its totient is φ = 1368999870.

The previous prime is 1368999787. The next prime is 1368999917. The reversal of 1368999871 is 1789998631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1368999871 - 2⁷ = 1368999743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1368199871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 684499935 + 684499936.

It is an arithmetic number, because the mean of its divisors is an integer number (684499936).

Almost surely, 2^1368999871 is an apocalyptic number.

1368999871 is a deficient number, since it is larger than the sum of its proper divisors (1).

1368999871 is an equidigital number, since it uses as much as digits as its factorization.

1368999871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5878656, while the sum is 61.

The square root of 1368999871 is about 36999.9982567567. The cubic root of 1368999871 is about 1110.3702119822.

The spelling of 1368999871 in words is "one billion, three hundred sixty-eight million, nine hundred ninety-nine thousand, eight hundred seventy-one".