383540513 has 2 divisors, whose sum is σ = 383540514. Its totient is φ = 383540512.

The previous prime is 383540477. The next prime is 383540543. The reversal of 383540513 is 315045383.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 236452129 + 147088384 = 15377^2 + 12128^2 .

It is an emirp because it is prime and its reverse (315045383) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 383540513 - 2¹⁶ = 383474977 is a prime.

It is a super-2 number, since 2×383540513² = 294206650224606338, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 383540513.

It is not a weakly prime, because it can be changed into another prime (383540543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191770256 + 191770257.

It is an arithmetic number, because the mean of its divisors is an integer number (191770257).

Almost surely, 2^383540513 is an apocalyptic number.

It is an amenable number.

383540513 is a deficient number, since it is larger than the sum of its proper divisors (1).

383540513 is an equidigital number, since it uses as much as digits as its factorization.

383540513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 383540513 is about 19584.1903840828. The cubic root of 383540513 is about 726.5582105575.

Adding to 383540513 its reverse (315045383), we get a palindrome (698585896).

The spelling of 383540513 in words is "three hundred eighty-three million, five hundred forty thousand, five hundred thirteen".