9131666456 has 32 divisors (see below), whose sum is σ = 19661486400. Its totient is φ = 3932295840.

The previous prime is 9131666449. The next prime is 9131666459. The reversal of 9131666456 is 6546661319.

It is a self number, because there is not a number n which added to its sum of digits gives 9131666456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9131666459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2729090 + ... + 2732433.

It is an arithmetic number, because the mean of its divisors is an integer number (614421450).

Almost surely, 2^9131666456 is an apocalyptic number.

It is an amenable number.

9131666456 is an abundant number, since it is smaller than the sum of its proper divisors (10529819944).

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

9131666456 is a wasteful number, since it uses less digits than its factorization.

9131666456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5461559 (or 5461555 counting only the distinct ones).

The product of its digits is 699840, while the sum is 47.

The square root of 9131666456 is about 95559.7533274338. The cubic root of 9131666456 is about 2090.1783579845.

The spelling of 9131666456 in words is "nine billion, one hundred thirty-one million, six hundred sixty-six thousand, four hundred fifty-six".