1090909001 has 24 divisors (see below), whose sum is σ = 1372279104. Its totient is φ = 859572000.

The previous prime is 1090908971. The next prime is 1090909019. The reversal of 1090909001 is 1009090901.

It is a de Polignac number, because none of the positive numbers 2^k-1090909001 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1090909031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 156476 + ... + 163298.

It is an arithmetic number, because the mean of its divisors is an integer number (57178296).

Almost surely, 2^1090909001 is an apocalyptic number.

It is an amenable number.

1090909001 is a deficient number, since it is larger than the sum of its proper divisors (281370103).

1090909001 is a wasteful number, since it uses less digits than its factorization.

1090909001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7101 (or 7094 counting only the distinct ones).

The product of its (nonzero) digits is 729, while the sum is 29.

The square root of 1090909001 is about 33028.9115927243. The cubic root of 1090909001 is about 1029.4284701195.

Adding to 1090909001 its reverse (1009090901), we get a palindrome (2099999902).

It can be divided in two parts, 109090900 and 1, that added together give a palindrome (109090901).

The spelling of 1090909001 in words is "one billion, ninety million, nine hundred nine thousand, one".