9163221949 has 16 divisors (see below), whose sum is σ = 10536818688. Its totient is φ = 7805855232.

The previous prime is 9163221937. The next prime is 9163221961. The reversal of 9163221949 is 9491223619.

It is an interprime number because it is at equal distance from previous prime (9163221937) and next prime (9163221961).

It is not a de Polignac number, because 9163221949 - 2²³ = 9154833341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9163221899 and 9163221908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9163021949) 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, 1495917 + ... + 1502029.

It is an arithmetic number, because the mean of its divisors is an integer number (658551168).

Almost surely, 2^9163221949 is an apocalyptic number.

It is an amenable number.

9163221949 is a deficient number, since it is larger than the sum of its proper divisors (1373596739).

9163221949 is a wasteful number, since it uses less digits than its factorization.

9163221949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7404.

The product of its digits is 209952, while the sum is 46.

The square root of 9163221949 is about 95724.7196339587. The cubic root of 9163221949 is about 2092.5832049312.

The spelling of 9163221949 in words is "nine billion, one hundred sixty-three million, two hundred twenty-one thousand, nine hundred forty-nine".