1121664664 has 16 divisors (see below), whose sum is σ = 2110885920. Its totient is φ = 558761760.

The previous prime is 1121664659. The next prime is 1121664679. The reversal of 1121664664 is 4664661211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256519 + ... + 260854.

It is an arithmetic number, because the mean of its divisors is an integer number (131930370).

Almost surely, 2^1121664664 is an apocalyptic number.

It is an amenable number.

1121664664 is a deficient number, since it is larger than the sum of its proper divisors (989221256).

1121664664 is a wasteful number, since it uses less digits than its factorization.

1121664664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517650 (or 517646 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 1121664664 is about 33491.2625023304. The cubic root of 1121664664 is about 1039.0130750790.

The spelling of 1121664664 in words is "one billion, one hundred twenty-one million, six hundred sixty-four thousand, six hundred sixty-four".