192939381 has 32 divisors (see below), whose sum is σ = 300134400. Its totient is φ = 122335920.

The previous prime is 192939379. The next prime is 192939389. The reversal of 192939381 is 183939291.

It is a happy number.

It is not a de Polignac number, because 192939381 - 2¹ = 192939379 is a prime.

It is a super-2 number, since 2×192939381² = 74451209481326322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (192939389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47430 + ... + 51336.

It is an arithmetic number, because the mean of its divisors is an integer number (9379200).

Almost surely, 2^192939381 is an apocalyptic number.

It is an amenable number.

192939381 is a deficient number, since it is larger than the sum of its proper divisors (107195019).

192939381 is a wasteful number, since it uses less digits than its factorization.

192939381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4006 (or 4000 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 192939381 is about 13890.2620925597. The cubic root of 192939381 is about 577.8391463812.

The spelling of 192939381 in words is "one hundred ninety-two million, nine hundred thirty-nine thousand, three hundred eighty-one".