1116551664 has 60 divisors (see below), whose sum is σ = 3209263096. Its totient is φ = 362123136.

The previous prime is 1116551633. The next prime is 1116551669. The reversal of 1116551664 is 4661556111.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1116551669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99454 + ... + 110109.

Almost surely, 2^1116551664 is an apocalyptic number.

It is an amenable number.

1116551664 is an abundant number, since it is smaller than the sum of its proper divisors (2092711432).

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

1116551664 is a wasteful number, since it uses less digits than its factorization.

1116551664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209614 (or 209605 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 1116551664 is about 33414.8419717945. The cubic root of 1116551664 is about 1037.4319232246.

The spelling of 1116551664 in words is "one billion, one hundred sixteen million, five hundred fifty-one thousand, six hundred sixty-four".