971423166 has 64 divisors (see below), whose sum is σ = 2283356160. Its totient is φ = 269762400.

The previous prime is 971423153. The next prime is 971423177. The reversal of 971423166 is 661324179.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 296445 + ... + 299703.

It is an arithmetic number, because the mean of its divisors is an integer number (35677440).

Almost surely, 2^971423166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 971423166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1141678080).

971423166 is an abundant number, since it is smaller than the sum of its proper divisors (1311932994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

971423166 is a wasteful number, since it uses less digits than its factorization.

971423166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3469.

The product of its digits is 54432, while the sum is 39.

The square root of 971423166 is about 31167.6621837442. The cubic root of 971423166 is about 990.3821828164.

The spelling of 971423166 in words is "nine hundred seventy-one million, four hundred twenty-three thousand, one hundred sixty-six".