8991958514 has 32 divisors (see below), whose sum is σ = 17547273216. Its totient is φ = 3351039120.

The previous prime is 8991958499. The next prime is 8991958531. The reversal of 8991958514 is 4158591998.

8991958514 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1265792 + ... + 1272875.

It is an arithmetic number, because the mean of its divisors is an integer number (548352288).

Almost surely, 2^8991958514 is an apocalyptic number.

8991958514 is a deficient number, since it is larger than the sum of its proper divisors (8555314702).

8991958514 is a wasteful number, since it uses less digits than its factorization.

8991958514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2538710.

The product of its digits is 4665600, while the sum is 59.

The square root of 8991958514 is about 94825.9379811241. The cubic root of 8991958514 is about 2079.4641212276.

It can be divided in two parts, 899195 and 8514, that added together give a palindrome (907709).

The spelling of 8991958514 in words is "eight billion, nine hundred ninety-one million, nine hundred fifty-eight thousand, five hundred fourteen".