1368045643 has 2 divisors, whose sum is σ = 1368045644. Its totient is φ = 1368045642.

The previous prime is 1368045571. The next prime is 1368045649. The reversal of 1368045643 is 3465408631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1368045643 - 2²¹ = 1365948491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1368045596 and 1368045605.

It is not a weakly prime, because it can be changed into another prime (1368045649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 684022821 + 684022822.

It is an arithmetic number, because the mean of its divisors is an integer number (684022822).

Almost surely, 2^1368045643 is an apocalyptic number.

1368045643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1368045643 is an equidigital number, since it uses as much as digits as its factorization.

1368045643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 40.

The square root of 1368045643 is about 36987.1010353610. The cubic root of 1368045643 is about 1110.1121665186.

The spelling of 1368045643 in words is "one billion, three hundred sixty-eight million, forty-five thousand, six hundred forty-three".