19195135148 has 144 divisors (see below), whose sum is σ = 42761053440. Its totient is φ = 7496294400.

The previous prime is 19195135123. The next prime is 19195135159. The reversal of 19195135148 is 84153159191.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7223036 + ... + 7225692.

It is an arithmetic number, because the mean of its divisors is an integer number (296951760).

Almost surely, 2^19195135148 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19195135148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21380526720).

19195135148 is an abundant number, since it is smaller than the sum of its proper divisors (23565918292).

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

19195135148 is a wasteful number, since it uses less digits than its factorization.

19195135148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2776 (or 2767 counting only the distinct ones).

The product of its digits is 194400, while the sum is 47.

The spelling of 19195135148 in words is "nineteen billion, one hundred ninety-five million, one hundred thirty-five thousand, one hundred forty-eight".