1117021481 has 8 divisors (see below), whose sum is σ = 1174811904. Its totient is φ = 1060590960.

The previous prime is 1117021429. The next prime is 1117021483. The reversal of 1117021481 is 1841207111.

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 1117021481 - 2³⁰ = 43279657 is a prime.

It is a super-2 number, since 2×1117021481² = 2495473978030866722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1117021481.

It is not an unprimeable number, because it can be changed into a prime (1117021483) 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, 338291 + ... + 341576.

It is an arithmetic number, because the mean of its divisors is an integer number (146851488).

Almost surely, 2^1117021481 is an apocalyptic number.

It is an amenable number.

1117021481 is a deficient number, since it is larger than the sum of its proper divisors (57790423).

1117021481 is an equidigital number, since it uses as much as digits as its factorization.

1117021481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679951.

The product of its (nonzero) digits is 448, while the sum is 26.

The square root of 1117021481 is about 33421.8712971012. The cubic root of 1117021481 is about 1037.5774112850.

Adding to 1117021481 its reverse (1841207111), we get a palindrome (2958228592).

The spelling of 1117021481 in words is "one billion, one hundred seventeen million, twenty-one thousand, four hundred eighty-one".