7181487966 has 16 divisors (see below), whose sum is σ = 14390550288. Its totient is φ = 2389233600.

The previous prime is 7181487913. The next prime is 7181487967. The reversal of 7181487966 is 6697841817.

It is a happy 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 (7181487967) 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, 1145545 + ... + 1151796.

It is an arithmetic number, because the mean of its divisors is an integer number (899409393).

Almost surely, 2^7181487966 is an apocalyptic number.

7181487966 is an abundant number, since it is smaller than the sum of its proper divisors (7209062322).

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

7181487966 is a wasteful number, since it uses less digits than its factorization.

7181487966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2297867.

The product of its digits is 4064256, while the sum is 57.

The square root of 7181487966 is about 84743.6603292541. The cubic root of 7181487966 is about 1929.3224254862.

The spelling of 7181487966 in words is "seven billion, one hundred eighty-one million, four hundred eighty-seven thousand, nine hundred sixty-six".