9161973 has 6 divisors (see below), whose sum is σ = 13233974. Its totient is φ = 6107976.

The previous prime is 9161959. The next prime is 9161987. The reversal of 9161973 is 3791619.

9161973 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9161959) and next prime (9161987).

It can be written as a sum of positive squares in only one way, i.e., 6671889 + 2490084 = 2583^2 + 1578^2 .

It is not a de Polignac number, because 9161973 - 2⁶ = 9161909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9161923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 508990 + ... + 509007.

Almost surely, 2^9161973 is an apocalyptic number.

It is an amenable number.

9161973 is a deficient number, since it is larger than the sum of its proper divisors (4072001).

9161973 is a wasteful number, since it uses less digits than its factorization.

9161973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018003 (or 1018000 counting only the distinct ones).

The product of its digits is 10206, while the sum is 36.

The square root of 9161973 is about 3026.8751213091. The cubic root of 9161973 is about 209.2488127440.

The spelling of 9161973 in words is "nine million, one hundred sixty-one thousand, nine hundred seventy-three".