193293381 has 16 divisors (see below), whose sum is σ = 271137600. Its totient is φ = 122306688.

The previous prime is 193293377. The next prime is 193293407. The reversal of 193293381 is 183392391.

It is not a de Polignac number, because 193293381 - 2² = 193293377 is a prime.

It is a super-2 number, since 2×193293381² = 74724662276822322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193293341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13696 + ... + 23961.

It is an arithmetic number, because the mean of its divisors is an integer number (16946100).

Almost surely, 2^193293381 is an apocalyptic number.

It is an amenable number.

193293381 is a deficient number, since it is larger than the sum of its proper divisors (77844219).

193293381 is a wasteful number, since it uses less digits than its factorization.

193293381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37748.

The product of its digits is 34992, while the sum is 39.

The square root of 193293381 is about 13902.9989930231. The cubic root of 193293381 is about 578.1923317186.

The spelling of 193293381 in words is "one hundred ninety-three million, two hundred ninety-three thousand, three hundred eighty-one".