381335293 has 2 divisors, whose sum is σ = 381335294. Its totient is φ = 381335292.

The previous prime is 381335287. The next prime is 381335323. The reversal of 381335293 is 392533183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 319587129 + 61748164 = 17877^2 + 7858^2 .

It is a cyclic number.

It is not a de Polignac number, because 381335293 - 2¹⁷ = 381204221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381335203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190667646 + 190667647.

It is an arithmetic number, because the mean of its divisors is an integer number (190667647).

Almost surely, 2^381335293 is an apocalyptic number.

It is an amenable number.

381335293 is a deficient number, since it is larger than the sum of its proper divisors (1).

381335293 is an equidigital number, since it uses as much as digits as its factorization.

381335293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 37.

The square root of 381335293 is about 19527.8081975423. The cubic root of 381335293 is about 725.1630504462.

It can be divided in two parts, 38 and 1335293, that added together give a palindrome (1335331).

The spelling of 381335293 in words is "three hundred eighty-one million, three hundred thirty-five thousand, two hundred ninety-three".