381130069 has 2 divisors, whose sum is σ = 381130070. Its totient is φ = 381130068.

The previous prime is 381130067. The next prime is 381130073. The reversal of 381130069 is 960031183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 377835844 + 3294225 = 19438^2 + 1815^2 .

It is a cyclic number.

It is not a de Polignac number, because 381130069 - 2¹ = 381130067 is a prime.

It is a super-2 number, since 2×381130069² = 290520258991889522, which contains 22 as substring.

Together with 381130067, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 381130069.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381130067) 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, 190565034 + 190565035.

It is an arithmetic number, because the mean of its divisors is an integer number (190565035).

Almost surely, 2^381130069 is an apocalyptic number.

It is an amenable number.

381130069 is a deficient number, since it is larger than the sum of its proper divisors (1).

381130069 is an equidigital number, since it uses as much as digits as its factorization.

381130069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 381130069 is about 19522.5528299964. The cubic root of 381130069 is about 725.0329396053.

The spelling of 381130069 in words is "three hundred eighty-one million, one hundred thirty thousand, sixty-nine".