8991683503 has 16 divisors (see below), whose sum is σ = 10837691136. Its totient is φ = 7358919040.

The previous prime is 8991683497. The next prime is 8991683521. The reversal of 8991683503 is 3053861998.

It is not a de Polignac number, because 8991683503 - 2²¹ = 8989586351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8991683543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1041001 + ... + 1049602.

It is an arithmetic number, because the mean of its divisors is an integer number (677355696).

Almost surely, 2^8991683503 is an apocalyptic number.

8991683503 is a deficient number, since it is larger than the sum of its proper divisors (1846007633).

8991683503 is a wasteful number, since it uses less digits than its factorization.

8991683503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2090654.

The product of its (nonzero) digits is 1399680, while the sum is 52.

The square root of 8991683503 is about 94824.4878868323. The cubic root of 8991683503 is about 2079.4429214954.

The spelling of 8991683503 in words is "eight billion, nine hundred ninety-one million, six hundred eighty-three thousand, five hundred three".