383575081997 has 2 divisors, whose sum is σ = 383575081998. Its totient is φ = 383575081996.

The previous prime is 383575081973. The next prime is 383575082053. The reversal of 383575081997 is 799180575383.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 378447662761 + 5127419236 = 615181^2 + 71606^2 .

It is a cyclic number.

It is not a de Polignac number, because 383575081997 - 2¹⁴ = 383575065613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (383575081297) 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, 191787540998 + 191787540999.

It is an arithmetic number, because the mean of its divisors is an integer number (191787540999).

Almost surely, 2^383575081997 is an apocalyptic number.

It is an amenable number.

383575081997 is a deficient number, since it is larger than the sum of its proper divisors (1).

383575081997 is an equidigital number, since it uses as much as digits as its factorization.

383575081997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57153600, while the sum is 65.

The spelling of 383575081997 in words is "three hundred eighty-three billion, five hundred seventy-five million, eighty-one thousand, nine hundred ninety-seven".