193497138396 has 72 divisors (see below), whose sum is σ = 498906849168. Its totient is φ = 63215712000.

The previous prime is 193497138383. The next prime is 193497138463. The reversal of 193497138396 is 693831794391.

193497138396 is a `hidden beast` number, since 1 + 9 + 3 + 497 + 138 + 3 + 9 + 6 = 666.

It is a super-2 number, since 2×193497138396² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 460291 + ... + 773861.

It is an arithmetic number, because the mean of its divisors is an integer number (6929261794).

Almost surely, 2^193497138396 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 193497138396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249453424584).

193497138396 is an abundant number, since it is smaller than the sum of its proper divisors (305409710772).

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

193497138396 is a wasteful number, since it uses less digits than its factorization.

193497138396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313923 (or 313918 counting only the distinct ones).

The product of its digits is 26453952, while the sum is 63.

The spelling of 193497138396 in words is "one hundred ninety-three billion, four hundred ninety-seven million, one hundred thirty-eight thousand, three hundred ninety-six".