383997493057 has 2 divisors, whose sum is σ = 383997493058. Its totient is φ = 383997493056.

The previous prime is 383997493043. The next prime is 383997493079. The reversal of 383997493057 is 750394799383.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 292638803521 + 91358689536 = 540961^2 + 302256^2 .

It is an emirp because it is prime and its reverse (750394799383) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 383997493057 - 2⁷ = 383997492929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 383997492983 and 383997493001.

It is not a weakly prime, because it can be changed into another prime (383997493757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191998746528 + 191998746529.

It is an arithmetic number, because the mean of its divisors is an integer number (191998746529).

Almost surely, 2^383997493057 is an apocalyptic number.

It is an amenable number.

383997493057 is a deficient number, since it is larger than the sum of its proper divisors (1).

383997493057 is an equidigital number, since it uses as much as digits as its factorization.

383997493057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 154314720, while the sum is 67.

The spelling of 383997493057 in words is "three hundred eighty-three billion, nine hundred ninety-seven million, four hundred ninety-three thousand, fifty-seven".