1260981763 has 4 divisors (see below), whose sum is σ = 1268532720. Its totient is φ = 1253430808.

The previous prime is 1260981737. The next prime is 1260981769. The reversal of 1260981763 is 3671890621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3671890621 = 7 ⋅524555803.

It is a cyclic number.

It is not a de Polignac number, because 1260981763 - 2⁵ = 1260981731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1260981769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3775228 + ... + 3775561.

It is an arithmetic number, because the mean of its divisors is an integer number (317133180).

Almost surely, 2^1260981763 is an apocalyptic number.

1260981763 is a deficient number, since it is larger than the sum of its proper divisors (7550957).

1260981763 is an equidigital number, since it uses as much as digits as its factorization.

1260981763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7550956.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 1260981763 is about 35510.3050254430. The cubic root of 1260981763 is about 1080.3627505165.

The spelling of 1260981763 in words is "one billion, two hundred sixty million, nine hundred eighty-one thousand, seven hundred sixty-three".