1117481621 has 8 divisors (see below), whose sum is σ = 1224016920. Its totient is φ = 1015479808.

The previous prime is 1117481557. The next prime is 1117481633. The reversal of 1117481621 is 1261847111.

It can be written as a sum of positive squares in 4 ways, for example, as 283080625 + 834400996 = 16825^2 + 28886^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1117481621 - 2⁶ = 1117481557 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1117481681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1132856 + ... + 1133841.

It is an arithmetic number, because the mean of its divisors is an integer number (153002115).

Almost surely, 2^1117481621 is an apocalyptic number.

It is an amenable number.

1117481621 is a deficient number, since it is larger than the sum of its proper divisors (106535299).

1117481621 is a wasteful number, since it uses less digits than its factorization.

1117481621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2266743.

The product of its digits is 2688, while the sum is 32.

The square root of 1117481621 is about 33428.7544039559. The cubic root of 1117481621 is about 1037.7198631346.

The spelling of 1117481621 in words is "one billion, one hundred seventeen million, four hundred eighty-one thousand, six hundred twenty-one".