1029380381 has 2 divisors, whose sum is σ = 1029380382. Its totient is φ = 1029380380.

The previous prime is 1029380377. The next prime is 1029380411. The reversal of 1029380381 is 1830839201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 994393156 + 34987225 = 31534^2 + 5915^2 .

It is an emirp because it is prime and its reverse (1830839201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1029380381 - 2² = 1029380377 is a prime.

It is a super-2 number, since 2×1029380381² = 2119247937575410322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1029380321) 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, 514690190 + 514690191.

It is an arithmetic number, because the mean of its divisors is an integer number (514690191).

Almost surely, 2^1029380381 is an apocalyptic number.

It is an amenable number.

1029380381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1029380381 is an equidigital number, since it uses as much as digits as its factorization.

1029380381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 1029380381 is about 32083.9583125275. The cubic root of 1029380381 is about 1009.6990839654.

The spelling of 1029380381 in words is "one billion, twenty-nine million, three hundred eighty thousand, three hundred eighty-one".