381712493 has 2 divisors, whose sum is σ = 381712494. Its totient is φ = 381712492.

The previous prime is 381712459. The next prime is 381712537. The reversal of 381712493 is 394217183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 359405764 + 22306729 = 18958^2 + 4723^2 .

It is a cyclic number.

It is not a de Polignac number, because 381712493 - 2¹⁰ = 381711469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381712403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190856246 + 190856247.

It is an arithmetic number, because the mean of its divisors is an integer number (190856247).

Almost surely, 2^381712493 is an apocalyptic number.

It is an amenable number.

381712493 is a deficient number, since it is larger than the sum of its proper divisors (1).

381712493 is an equidigital number, since it uses as much as digits as its factorization.

381712493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 38.

The square root of 381712493 is about 19537.4638323402. The cubic root of 381712493 is about 725.4020713890.

The spelling of 381712493 in words is "three hundred eighty-one million, seven hundred twelve thousand, four hundred ninety-three".