193989275 has 12 divisors (see below), whose sum is σ = 245086992. Its totient is φ = 152262240.

The previous prime is 193989223. The next prime is 193989277. The reversal of 193989275 is 572989391.

It is not a de Polignac number, because 193989275 - 2²⁴ = 177212059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (193989277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71879 + ... + 74528.

It is an arithmetic number, because the mean of its divisors is an integer number (20423916).

Almost surely, 2^193989275 is an apocalyptic number.

193989275 is a deficient number, since it is larger than the sum of its proper divisors (51097717).

193989275 is a wasteful number, since it uses less digits than its factorization.

193989275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146470 (or 146465 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 53.

The square root of 193989275 is about 13928.0032668003. The cubic root of 193989275 is about 578.8853692090.

The spelling of 193989275 in words is "one hundred ninety-three million, nine hundred eighty-nine thousand, two hundred seventy-five".