1090289509 has 8 divisors (see below), whose sum is σ = 1155835008. Its totient is φ = 1024900800.

The previous prime is 1090289477. The next prime is 1090289527. The reversal of 1090289509 is 9059820901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1090289509 - 2⁵ = 1090289477 is a prime.

It is a super-2 number, since 2×1090289509² = 2377462426870922162, 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 (1090289569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24717 + ... + 52834.

It is an arithmetic number, because the mean of its divisors is an integer number (144479376).

Almost surely, 2^1090289509 is an apocalyptic number.

It is an amenable number.

1090289509 is a deficient number, since it is larger than the sum of its proper divisors (65545499).

1090289509 is an equidigital number, since it uses as much as digits as its factorization.

1090289509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78395.

The product of its (nonzero) digits is 58320, while the sum is 43.

The square root of 1090289509 is about 33019.5322347243. The cubic root of 1090289509 is about 1029.2335734925.

The spelling of 1090289509 in words is "one billion, ninety million, two hundred eighty-nine thousand, five hundred nine".