9162227991 has 16 divisors (see below), whose sum is σ = 13964597504. Its totient is φ = 5234393664.

The previous prime is 9162227989. The next prime is 9162228007. The reversal of 9162227991 is 1997222619.

It is not a de Polignac number, because 9162227991 - 2¹ = 9162227989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9162227991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9162227791) 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, 52995 + ... + 145371.

It is an arithmetic number, because the mean of its divisors is an integer number (872787344).

Almost surely, 2^9162227991 is an apocalyptic number.

9162227991 is a deficient number, since it is larger than the sum of its proper divisors (4802369513).

9162227991 is a wasteful number, since it uses less digits than its factorization.

9162227991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97110.

The product of its digits is 244944, while the sum is 48.

The square root of 9162227991 is about 95719.5277412086. The cubic root of 9162227991 is about 2092.5075395871.

The spelling of 9162227991 in words is "nine billion, one hundred sixty-two million, two hundred twenty-seven thousand, nine hundred ninety-one".