381935293 has 2 divisors, whose sum is σ = 381935294. Its totient is φ = 381935292.

The previous prime is 381935233. The next prime is 381935297. The reversal of 381935293 is 392539183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 287709444 + 94225849 = 16962^2 + 9707^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381935293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381935297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190967646 + 190967647.

It is an arithmetic number, because the mean of its divisors is an integer number (190967647).

Almost surely, 2^381935293 is an apocalyptic number.

It is an amenable number.

381935293 is a deficient number, since it is larger than the sum of its proper divisors (1).

381935293 is an equidigital number, since it uses as much as digits as its factorization.

381935293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174960, while the sum is 43.

The square root of 381935293 is about 19543.1648665205. The cubic root of 381935293 is about 725.5431794652.

The spelling of 381935293 in words is "three hundred eighty-one million, nine hundred thirty-five thousand, two hundred ninety-three".