193409434148 has 72 divisors (see below), whose sum is σ = 397998562752. Its totient is φ = 80559743616.

The previous prime is 193409434139. The next prime is 193409434187. The reversal of 193409434148 is 841434904391.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 193409434096 and 193409434105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43044590 + ... + 43049082.

It is an arithmetic number, because the mean of its divisors is an integer number (5527757816).

Almost surely, 2^193409434148 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 193409434148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198999281376).

193409434148 is an abundant number, since it is smaller than the sum of its proper divisors (204589128604).

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

193409434148 is a wasteful number, since it uses less digits than its factorization.

193409434148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5701 (or 5662 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 50.

The spelling of 193409434148 in words is "one hundred ninety-three billion, four hundred nine million, four hundred thirty-four thousand, one hundred forty-eight".