193347138143 has 4 divisors (see below), whose sum is σ = 195224294928. Its totient is φ = 191469981360.

The previous prime is 193347138121. The next prime is 193347138161. The reversal of 193347138143 is 341831743391.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341831743391 = 19 ⋅17991144389.

It is a cyclic number.

It is not a de Polignac number, because 193347138143 - 2²⁰ = 193346089567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193347135143) 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, 938578238 + ... + 938578443.

It is an arithmetic number, because the mean of its divisors is an integer number (48806073732).

Almost surely, 2^193347138143 is an apocalyptic number.

193347138143 is a deficient number, since it is larger than the sum of its proper divisors (1877156785).

193347138143 is a wasteful number, since it uses less digits than its factorization.

193347138143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1877156784.

The product of its digits is 653184, while the sum is 47.

The spelling of 193347138143 in words is "one hundred ninety-three billion, three hundred forty-seven million, one hundred thirty-eight thousand, one hundred forty-three".