1118989045 has 8 divisors (see below), whose sum is σ = 1421774424. Its totient is φ = 842532864.

The previous prime is 1118989033. The next prime is 1118989057. The reversal of 1118989045 is 5409898111.

It is an interprime number because it is at equal distance from previous prime (1118989033) and next prime (1118989057).

It can be written as a sum of positive squares in 4 ways, for example, as 163993636 + 954995409 = 12806^2 + 30903^2 .

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 1118989045 - 2⁷ = 1118988917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1118988986 and 1118989004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6582204 + ... + 6582373.

It is an arithmetic number, because the mean of its divisors is an integer number (177721803).

Almost surely, 2^1118989045 is an apocalyptic number.

It is an amenable number.

1118989045 is a deficient number, since it is larger than the sum of its proper divisors (302785379).

1118989045 is a wasteful number, since it uses less digits than its factorization.

1118989045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13164599.

The product of its (nonzero) digits is 103680, while the sum is 46.

The square root of 1118989045 is about 33451.2936222204. The cubic root of 1118989045 is about 1038.1862633406.

The spelling of 1118989045 in words is "one billion, one hundred eighteen million, nine hundred eighty-nine thousand, forty-five".