1056866911 has 16 divisors (see below), whose sum is σ = 1113241600. Its totient is φ = 1002054240.

The previous prime is 1056866903. The next prime is 1056866939. The reversal of 1056866911 is 1196686501.

It is a cyclic number.

It is not a de Polignac number, because 1056866911 - 2³ = 1056866903 is a prime.

It is a super-2 number, since 2×1056866911² = 2233935335133363842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056866411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 412045 + ... + 414601.

It is an arithmetic number, because the mean of its divisors is an integer number (69577600).

Almost surely, 2^1056866911 is an apocalyptic number.

1056866911 is a deficient number, since it is larger than the sum of its proper divisors (56374689).

1056866911 is a wasteful number, since it uses less digits than its factorization.

1056866911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2854.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 1056866911 is about 32509.4895530520. The cubic root of 1056866911 is about 1018.6072594320.

The spelling of 1056866911 in words is "one billion, fifty-six million, eight hundred sixty-six thousand, nine hundred eleven".