1005019427 has 2 divisors, whose sum is σ = 1005019428. Its totient is φ = 1005019426.

The previous prime is 1005019409. The next prime is 1005019439. The reversal of 1005019427 is 7249105001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1005019427 - 2¹² = 1005015331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1005019427.

It is not a weakly prime, because it can be changed into another prime (1005019027) 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, 502509713 + 502509714.

It is an arithmetic number, because the mean of its divisors is an integer number (502509714).

Almost surely, 2^1005019427 is an apocalyptic number.

1005019427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1005019427 is an equidigital number, since it uses as much as digits as its factorization.

1005019427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 1005019427 is about 31702.0413696027. The cubic root of 1005019427 is about 1001.6703507084.

The spelling of 1005019427 in words is "one billion, five million, nineteen thousand, four hundred twenty-seven".