30891189222 has 48 divisors (see below), whose sum is σ = 68787587232. Its totient is φ = 10011807360.

The previous prime is 30891189193. The next prime is 30891189253. The reversal of 30891189222 is 22298119803.

It is a happy number.

30891189222 is a `hidden beast` number, since 308 + 9 + 118 + 9 + 222 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 990978 + ... + 1021674.

It is an arithmetic number, because the mean of its divisors is an integer number (1433074734).

Almost surely, 2^30891189222 is an apocalyptic number.

30891189222 is an abundant number, since it is smaller than the sum of its proper divisors (37896398010).

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

30891189222 is a wasteful number, since it uses less digits than its factorization.

30891189222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32253 (or 32250 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 30891189222 in words is "thirty billion, eight hundred ninety-one million, one hundred eighty-nine thousand, two hundred twenty-two".