380256641 has 2 divisors, whose sum is σ = 380256642. Its totient is φ = 380256640.

The previous prime is 380256619. The next prime is 380256719. The reversal of 380256641 is 146652083.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 233967616 + 146289025 = 15296^2 + 12095^2 .

It is an emirp because it is prime and its reverse (146652083) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 380256641 - 2²⁶ = 313147777 is a prime.

It is a super-2 number, since 2×380256641² = 289190226049205762, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (380156641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190128320 + 190128321.

It is an arithmetic number, because the mean of its divisors is an integer number (190128321).

Almost surely, 2^380256641 is an apocalyptic number.

It is an amenable number.

380256641 is a deficient number, since it is larger than the sum of its proper divisors (1).

380256641 is an equidigital number, since it uses as much as digits as its factorization.

380256641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 380256641 is about 19500.1702813078. The cubic root of 380256641 is about 724.4786682555.

The spelling of 380256641 in words is "three hundred eighty million, two hundred fifty-six thousand, six hundred forty-one".