1263160643 has 2 divisors, whose sum is σ = 1263160644. Its totient is φ = 1263160642.

The previous prime is 1263160597. The next prime is 1263160663. The reversal of 1263160643 is 3460613621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1263160643 - 2⁸ = 1263160387 is a prime.

It is a super-3 number, since 3×1263160643³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1263160663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631580321 + 631580322.

It is an arithmetic number, because the mean of its divisors is an integer number (631580322).

Almost surely, 2^1263160643 is an apocalyptic number.

1263160643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263160643 is an equidigital number, since it uses as much as digits as its factorization.

1263160643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 1263160643 is about 35540.9713288762. The cubic root of 1263160643 is about 1080.9846538424.

The spelling of 1263160643 in words is "one billion, two hundred sixty-three million, one hundred sixty thousand, six hundred forty-three".