1001006091 has 12 divisors (see below), whose sum is σ = 1446193320. Its totient is φ = 667200960.

The previous prime is 1001006033. The next prime is 1001006099. The reversal of 1001006091 is 1906001001.

It is not a de Polignac number, because 1001006091 - 2¹⁷ = 1000875019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1001006099) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56280 + ... + 71898.

It is an arithmetic number, because the mean of its divisors is an integer number (120516110).

Almost surely, 2^1001006091 is an apocalyptic number.

1001006091 is a deficient number, since it is larger than the sum of its proper divisors (445187229).

1001006091 is a wasteful number, since it uses less digits than its factorization.

1001006091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22746 (or 22743 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 1001006091 is about 31638.6802980150. The cubic root of 1001006091 is about 1000.3352512607.

Adding to 1001006091 its reverse (1906001001), we get a palindrome (2907007092).

The spelling of 1001006091 in words is "one billion, one million, six thousand, ninety-one".