9211481998 has 16 divisors (see below), whose sum is σ = 14619816720. Its totient is φ = 4340722176.

The previous prime is 9211481963. The next prime is 9211482031. The reversal of 9211481998 is 8991841129.

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, 620665 + ... + 635332.

It is an arithmetic number, because the mean of its divisors is an integer number (913738545).

Almost surely, 2^9211481998 is an apocalyptic number.

9211481998 is a deficient number, since it is larger than the sum of its proper divisors (5408334722).

9211481998 is a wasteful number, since it uses less digits than its factorization.

9211481998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256211.

The product of its digits is 373248, while the sum is 52.

The square root of 9211481998 is about 95976.4658549167. The cubic root of 9211481998 is about 2096.2504518757.

The spelling of 9211481998 in words is "nine billion, two hundred eleven million, four hundred eighty-one thousand, nine hundred ninety-eight".