9181860252 has 12 divisors (see below), whose sum is σ = 21424340616. Its totient is φ = 3060620080.

The previous prime is 9181860223. The next prime is 9181860283. The reversal of 9181860252 is 2520681819.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382577499 + ... + 382577522.

It is an arithmetic number, because the mean of its divisors is an integer number (1785361718).

Almost surely, 2^9181860252 is an apocalyptic number.

It is an amenable number.

9181860252 is an abundant number, since it is smaller than the sum of its proper divisors (12242480364).

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

9181860252 is a wasteful number, since it uses less digits than its factorization.

9181860252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765155028 (or 765155026 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 9181860252 is about 95822.0238358594. The cubic root of 9181860252 is about 2094.0010390349.

The spelling of 9181860252 in words is "nine billion, one hundred eighty-one million, eight hundred sixty thousand, two hundred fifty-two".