1116654561 has 24 divisors (see below), whose sum is σ = 1807138944. Its totient is φ = 658467360.

The previous prime is 1116654551. The next prime is 1116654601. The reversal of 1116654561 is 1654566111.

It is not a de Polignac number, because 1116654561 - 2¹¹ = 1116652513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1116654521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148761 + ... + 156086.

It is an arithmetic number, because the mean of its divisors is an integer number (75297456).

Almost surely, 2^1116654561 is an apocalyptic number.

1116654561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1116654561 is a deficient number, since it is larger than the sum of its proper divisors (690484383).

1116654561 is a wasteful number, since it uses less digits than its factorization.

1116654561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304901 (or 304898 counting only the distinct ones).

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

The square root of 1116654561 is about 33416.3816263820. The cubic root of 1116654561 is about 1037.4637907913.

The spelling of 1116654561 in words is "one billion, one hundred sixteen million, six hundred fifty-four thousand, five hundred sixty-one".