191263933628 has 6 divisors (see below), whose sum is σ = 334711883856. Its totient is φ = 95631966812.

The previous prime is 191263933519. The next prime is 191263933639. The reversal of 191263933628 is 826339362191.

It is a self number, because there is not a number n which added to its sum of digits gives 191263933628.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23907991700 + ... + 23907991707.

It is an arithmetic number, because the mean of its divisors is an integer number (55785313976).

Almost surely, 2^191263933628 is an apocalyptic number.

It is an amenable number.

191263933628 is a deficient number, since it is larger than the sum of its proper divisors (143447950228).

191263933628 is a wasteful number, since it uses less digits than its factorization.

191263933628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47815983411 (or 47815983409 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 53.

The spelling of 191263933628 in words is "one hundred ninety-one billion, two hundred sixty-three million, nine hundred thirty-three thousand, six hundred twenty-eight".