1090804590 has 128 divisors (see below), whose sum is σ = 3000291840. Its totient is φ = 281836800.

The previous prime is 1090804577. The next prime is 1090804591. The reversal of 1090804590 is 954080901.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1090804591) 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 63 ways as a sum of consecutive naturals, for example, 2335537 + ... + 2336003.

It is an arithmetic number, because the mean of its divisors is an integer number (23439780).

Almost surely, 2^1090804590 is an apocalyptic number.

1090804590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1090804590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1500145920).

1090804590 is an abundant number, since it is smaller than the sum of its proper divisors (1909487250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1090804590 is a wasteful number, since it uses less digits than its factorization.

1090804590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735 (or 729 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 1090804590 is about 33027.3309548319. The cubic root of 1090804590 is about 1029.3956268407.

The spelling of 1090804590 in words is "one billion, ninety million, eight hundred four thousand, five hundred ninety".