9168214491 has 12 divisors (see below), whose sum is σ = 13244802168. Its totient is φ = 6111300384.

The previous prime is 9168214469. The next prime is 9168214499. The reversal of 9168214491 is 1944128619.

It is a happy number.

9168214491 is a `hidden beast` number, since 91 + 68 + 2 + 14 + 491 = 666.

It is not a de Polignac number, because 9168214491 - 2¹⁸ = 9167952347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9168214499) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2676 + ... + 135438.

It is an arithmetic number, because the mean of its divisors is an integer number (1103733514).

Almost surely, 2^9168214491 is an apocalyptic number.

9168214491 is a deficient number, since it is larger than the sum of its proper divisors (4076587677).

9168214491 is a wasteful number, since it uses less digits than its factorization.

9168214491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140442 (or 140439 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 9168214491 is about 95750.7936833946. The cubic root of 9168214491 is about 2092.9631809113.

The spelling of 9168214491 in words is "nine billion, one hundred sixty-eight million, two hundred fourteen thousand, four hundred ninety-one".