193257243912 has 16 divisors (see below), whose sum is σ = 483143109840. Its totient is φ = 64419081296.

The previous prime is 193257243911. The next prime is 193257243917. The reversal of 193257243912 is 219342752391.

It is a super-2 number, since 2×193257243912² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (193257243911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4026192558 + ... + 4026192605.

It is an arithmetic number, because the mean of its divisors is an integer number (30196444365).

Almost surely, 2^193257243912 is an apocalyptic number.

193257243912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

193257243912 is an abundant number, since it is smaller than the sum of its proper divisors (289885865928).

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

193257243912 is a wasteful number, since it uses less digits than its factorization.

193257243912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8052385172 (or 8052385168 counting only the distinct ones).

The product of its digits is 816480, while the sum is 48.

The spelling of 193257243912 in words is "one hundred ninety-three billion, two hundred fifty-seven million, two hundred forty-three thousand, nine hundred twelve".