1004000381 has 2 divisors, whose sum is σ = 1004000382. Its totient is φ = 1004000380.

The previous prime is 1004000351. The next prime is 1004000411. The reversal of 1004000381 is 1830004001.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1004000351) and next prime (1004000411).

It can be written as a sum of positive squares in only one way, i.e., 896463481 + 107536900 = 29941^2 + 10370^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1004000381 is a prime.

It is a super-2 number, since 2×1004000381² = 2016033530096290322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1004000341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502000190 + 502000191.

It is an arithmetic number, because the mean of its divisors is an integer number (502000191).

Almost surely, 2^1004000381 is an apocalyptic number.

It is an amenable number.

1004000381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1004000381 is an equidigital number, since it uses as much as digits as its factorization.

1004000381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1004000381 is about 31685.9650476358. The cubic root of 1004000381 is about 1001.3316861581.

Adding to 1004000381 its reverse (1830004001), we get a palindrome (2834004382).

The spelling of 1004000381 in words is "one billion, four million, three hundred eighty-one", and thus it is an aban number.