1468066781 has 2 divisors, whose sum is σ = 1468066782. Its totient is φ = 1468066780.

The previous prime is 1468066777. The next prime is 1468066799. The reversal of 1468066781 is 1876608641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1468039225 + 27556 = 38315^2 + 166^2 .

It is a cyclic number.

It is not a de Polignac number, because 1468066781 - 2² = 1468066777 is a prime.

It is a super-2 number, since 2×1468066781² = 4310440146951403922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1468066751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 734033390 + 734033391.

It is an arithmetic number, because the mean of its divisors is an integer number (734033391).

Almost surely, 2^1468066781 is an apocalyptic number.

It is an amenable number.

1468066781 is a deficient number, since it is larger than the sum of its proper divisors (1).

1468066781 is an equidigital number, since it uses as much as digits as its factorization.

1468066781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 1468066781 is about 38315.3595963812. The cubic root of 1468066781 is about 1136.5327041561.

The spelling of 1468066781 in words is "one billion, four hundred sixty-eight million, sixty-six thousand, seven hundred eighty-one".