2001091490 has 16 divisors (see below), whose sum is σ = 3602691648. Its totient is φ = 800275056.

The previous prime is 2001091441. The next prime is 2001091493. The reversal of 2001091490 is 941901002.

It is not an unprimeable number, because it can be changed into a prime (2001091493) 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 7 ways as a sum of consecutive naturals, for example, 40529 + ... + 75131.

It is an arithmetic number, because the mean of its divisors is an integer number (225168228).

Almost surely, 2^2001091490 is an apocalyptic number.

2001091490 is a deficient number, since it is larger than the sum of its proper divisors (1601600158).

2001091490 is a wasteful number, since it uses less digits than its factorization.

2001091490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40393.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 2001091490 is about 44733.5611146709. The cubic root of 2001091490 is about 1260.1502067506.

Adding to 2001091490 its reverse (941901002), we get a palindrome (2942992492).

The spelling of 2001091490 in words is "two billion, one million, ninety-one thousand, four hundred ninety".