193155336990 has 512 divisors, whose sum is σ = 678508462080. Its totient is φ = 38383424640.

The previous prime is 193155336971. The next prime is 193155337043. The reversal of 193155336990 is 99633551391.

193155336990 is a `hidden beast` number, since 1 + 9 + 3 + 15 + 533 + 6 + 9 + 90 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 38729277 + ... + 38734263.

It is an arithmetic number, because the mean of its divisors is an integer number (1325211840).

Almost surely, 2^193155336990 is an apocalyptic number.

193155336990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 193155336990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (339254231040).

193155336990 is an abundant number, since it is smaller than the sum of its proper divisors (485353125090).

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

193155336990 is a wasteful number, since it uses less digits than its factorization.

193155336990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5056 (or 5038 counting only the distinct ones).

The product of its (nonzero) digits is 2952450, while the sum is 54.

The spelling of 193155336990 in words is "one hundred ninety-three billion, one hundred fifty-five million, three hundred thirty-six thousand, nine hundred ninety".