1118912917 has 8 divisors (see below), whose sum is σ = 1125537336. Its totient is φ = 1112298432.

The previous prime is 1118912911. The next prime is 1118912929. The reversal of 1118912917 is 7192198111.

It can be written as a sum of positive squares in 4 ways, for example, as 363817476 + 755095441 = 19074^2 + 27479^2 .

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 1118912917 - 2¹⁹ = 1118388629 is a prime.

It is a super-2 number, since 2×1118912917² = 2503932231658897778, 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 1118912917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118912911) 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, 450483 + ... + 452959.

It is an arithmetic number, because the mean of its divisors is an integer number (140692167).

Almost surely, 2^1118912917 is an apocalyptic number.

It is an amenable number.

1118912917 is a deficient number, since it is larger than the sum of its proper divisors (6624419).

1118912917 is a wasteful number, since it uses less digits than its factorization.

1118912917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4967.

The product of its digits is 9072, while the sum is 40.

The square root of 1118912917 is about 33450.1557096525. The cubic root of 1118912917 is about 1038.1627192209.

The spelling of 1118912917 in words is "one billion, one hundred eighteen million, nine hundred twelve thousand, nine hundred seventeen".