1126656864 has 72 divisors (see below), whose sum is σ = 3322617480. Its totient is φ = 375549696.

The previous prime is 1126656847. The next prime is 1126656877. The reversal of 1126656864 is 4686566211.

1126656864 is a `hidden beast` number, since 1 + 1 + 26 + 6 + 568 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64669 + ... + 80220.

It is an arithmetic number, because the mean of its divisors is an integer number (46147465).

Almost surely, 2^1126656864 is an apocalyptic number.

It is an amenable number.

1126656864 is an abundant number, since it is smaller than the sum of its proper divisors (2195960616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1126656864 is an equidigital number, since it uses as much as digits as its factorization.

1126656864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144914 (or 144894 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 1126656864 is about 33565.7096454104. The cubic root of 1126656864 is about 1040.5522412241.

The spelling of 1126656864 in words is "one billion, one hundred twenty-six million, six hundred fifty-six thousand, eight hundred sixty-four".