1001002159 has 12 divisors (see below), whose sum is σ = 1050901488. Its totient is φ = 951668960.

The previous prime is 1001002157. The next prime is 1001002169. The reversal of 1001002159 is 9512001001.

It is not a de Polignac number, because 1001002159 - 2¹ = 1001002157 is a prime.

It is a super-2 number, since 2×1001002159² = 2004010644645322562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001002151) 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 in 11 ways as a sum of consecutive naturals, for example, 838467 + ... + 839659.

It is an arithmetic number, because the mean of its divisors is an integer number (87575124).

Almost surely, 2^1001002159 is an apocalyptic number.

1001002159 is a deficient number, since it is larger than the sum of its proper divisors (49899329).

1001002159 is an equidigital number, since it uses as much as digits as its factorization.

1001002159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1598 (or 1407 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 19.

The square root of 1001002159 is about 31638.6181588261. The cubic root of 1001002159 is about 1000.3339414707. Note that the first 3 decimals are identical.

The spelling of 1001002159 in words is "one billion, one million, two thousand, one hundred fifty-nine".