191819427352 has 32 divisors (see below), whose sum is σ = 411613401600. Its totient is φ = 82093971744.

The previous prime is 191819427347. The next prime is 191819427361. The reversal of 191819427352 is 253724918191.

It is a self number, because there is not a number n which added to its sum of digits gives 191819427352.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2341758 + ... + 2422285.

It is an arithmetic number, because the mean of its divisors is an integer number (12862918800).

Almost surely, 2^191819427352 is an apocalyptic number.

It is an amenable number.

191819427352 is an abundant number, since it is smaller than the sum of its proper divisors (219793974248).

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

191819427352 is a wasteful number, since it uses less digits than its factorization.

191819427352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4764775 (or 4764771 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 52.

The spelling of 191819427352 in words is "one hundred ninety-one billion, eight hundred nineteen million, four hundred twenty-seven thousand, three hundred fifty-two".