1001009143 has 2 divisors, whose sum is σ = 1001009144. Its totient is φ = 1001009142.

The previous prime is 1001009123. The next prime is 1001009161. The reversal of 1001009143 is 3419001001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1001009143 - 2¹⁷ = 1000878071 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1001009143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001009123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500504571 + 500504572.

It is an arithmetic number, because the mean of its divisors is an integer number (500504572).

Almost surely, 2^1001009143 is an apocalyptic number.

1001009143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001009143 is an equidigital number, since it uses as much as digits as its factorization.

1001009143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 1001009143 is about 31638.7285300784. The cubic root of 1001009143 is about 1000.3362679112.

The spelling of 1001009143 in words is "one billion, one million, nine thousand, one hundred forty-three".