381651275069 has 2 divisors, whose sum is σ = 381651275070. Its totient is φ = 381651275068.

The previous prime is 381651274973. The next prime is 381651275101. The reversal of 381651275069 is 960572156183.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 291913284100 + 89737990969 = 540290^2 + 299563^2 .

It is an emirp because it is prime and its reverse (960572156183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 381651275069 - 2²⁸ = 381382839613 is a prime.

It is a super-3 number, since 3×381651275069³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 381651275069.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381651275569) 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, 190825637534 + 190825637535.

It is an arithmetic number, because the mean of its divisors is an integer number (190825637535).

Almost surely, 2^381651275069 is an apocalyptic number.

It is an amenable number.

381651275069 is a deficient number, since it is larger than the sum of its proper divisors (1).

381651275069 is an equidigital number, since it uses as much as digits as its factorization.

381651275069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2721600, while the sum is 53.

The spelling of 381651275069 in words is "three hundred eighty-one billion, six hundred fifty-one million, two hundred seventy-five thousand, sixty-nine".