9121885797 has 16 divisors (see below), whose sum is σ = 12452996160. Its totient is φ = 5936189952.

The previous prime is 9121885793. The next prime is 9121885841. The reversal of 9121885797 is 7975881219.

It is not a de Polignac number, because 9121885797 - 2² = 9121885793 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9121885793) 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, 198079 + ... + 239747.

It is an arithmetic number, because the mean of its divisors is an integer number (778312260).

Almost surely, 2^9121885797 is an apocalyptic number.

It is an amenable number.

9121885797 is a deficient number, since it is larger than the sum of its proper divisors (3331110363).

9121885797 is a wasteful number, since it uses less digits than its factorization.

9121885797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43412.

The product of its digits is 2540160, while the sum is 57.

The square root of 9121885797 is about 95508.5639982091. The cubic root of 9121885797 is about 2089.4318485728.

The spelling of 9121885797 in words is "nine billion, one hundred twenty-one million, eight hundred eighty-five thousand, seven hundred ninety-seven".