193813868 has 6 divisors (see below), whose sum is σ = 339174276. Its totient is φ = 96906932.

The previous prime is 193813843. The next prime is 193813901. The reversal of 193813868 is 868318391.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24226730 + ... + 24226737.

It is an arithmetic number, because the mean of its divisors is an integer number (56529046).

Almost surely, 2^193813868 is an apocalyptic number.

It is an amenable number.

193813868 is a deficient number, since it is larger than the sum of its proper divisors (145360408).

193813868 is a wasteful number, since it uses less digits than its factorization.

193813868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48453471 (or 48453469 counting only the distinct ones).

The product of its digits is 248832, while the sum is 47.

The square root of 193813868 is about 13921.7049243259. The cubic root of 193813868 is about 578.7108386565.

The spelling of 193813868 in words is "one hundred ninety-three million, eight hundred thirteen thousand, eight hundred sixty-eight".