1268647089 has 8 divisors (see below), whose sum is σ = 1700030400. Its totient is φ = 841514256.

The previous prime is 1268647067. The next prime is 1268647123. The reversal of 1268647089 is 9807468621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1268647089 - 2⁵ = 1268647057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1268607089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1061922 + ... + 1063115.

It is an arithmetic number, because the mean of its divisors is an integer number (212503800).

Almost surely, 2^1268647089 is an apocalyptic number.

It is an amenable number.

1268647089 is a deficient number, since it is larger than the sum of its proper divisors (431383311).

1268647089 is a wasteful number, since it uses less digits than its factorization.

1268647089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2125239.

The product of its (nonzero) digits is 1161216, while the sum is 51.

The square root of 1268647089 is about 35618.0725054010. The cubic root of 1268647089 is about 1082.5474526861.

The spelling of 1268647089 in words is "one billion, two hundred sixty-eight million, six hundred forty-seven thousand, eighty-nine".