1260780651 has 24 divisors (see below), whose sum is σ = 1963271856. Its totient is φ = 775051200.

The previous prime is 1260780643. The next prime is 1260780721. The reversal of 1260780651 is 1560870621.

It is not a de Polignac number, because 1260780651 - 2³ = 1260780643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1260780601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117841 + ... + 128093.

It is an arithmetic number, because the mean of its divisors is an integer number (81802994).

Almost surely, 2^1260780651 is an apocalyptic number.

1260780651 is a deficient number, since it is larger than the sum of its proper divisors (702491205).

1260780651 is a wasteful number, since it uses less digits than its factorization.

1260780651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11323 (or 11320 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 1260780651 is about 35507.4731711509. The cubic root of 1260780651 is about 1080.3053123437.

The spelling of 1260780651 in words is "one billion, two hundred sixty million, seven hundred eighty thousand, six hundred fifty-one".