1005134381 has 2 divisors, whose sum is σ = 1005134382. Its totient is φ = 1005134380.

The previous prime is 1005134327. The next prime is 1005134479. The reversal of 1005134381 is 1834315001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 860894281 + 144240100 = 29341^2 + 12010^2 .

It is a cyclic number.

It is not a de Polignac number, because 1005134381 - 2¹⁰ = 1005133357 is a prime.

It is a super-2 number, since 2×1005134381² = 2020590247736506322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1005134381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1005134321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502567190 + 502567191.

It is an arithmetic number, because the mean of its divisors is an integer number (502567191).

Almost surely, 2^1005134381 is an apocalyptic number.

It is an amenable number.

1005134381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1005134381 is an equidigital number, since it uses as much as digits as its factorization.

1005134381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1005134381 is about 31703.8543555827. The cubic root of 1005134381 is about 1001.7085395634.

Adding to 1005134381 its reverse (1834315001), we get a palindrome (2839449382).

The spelling of 1005134381 in words is "one billion, five million, one hundred thirty-four thousand, three hundred eighty-one".