19091090920148 has 144 divisors (see below), whose sum is σ = 38525147068800. Its totient is φ = 8227063240704.

The previous prime is 19091090920147. The next prime is 19091090920283. The reversal of 19091090920148 is 84102909019091.

It is a self number, because there is not a number n which added to its sum of digits gives 19091090920148.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19091090920147) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1037719286 + ... + 1037737682.

Almost surely, 2^{19091090920148} is an apocalyptic number.

It is an amenable number.

19091090920148 is an abundant number, since it is smaller than the sum of its proper divisors (19434056148652).

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

19091090920148 is a wasteful number, since it uses less digits than its factorization.

19091090920148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18994 (or 18975 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 53.

The spelling of 19091090920148 in words is "nineteen trillion, ninety-one billion, ninety million, nine hundred twenty thousand, one hundred forty-eight".