1090108621 has 8 divisors (see below), whose sum is σ = 1300005504. Its totient is φ = 893753520.

The previous prime is 1090108577. The next prime is 1090108631. The reversal of 1090108621 is 1268010901.

It is a happy number.

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 1090108621 - 2¹¹ = 1090106573 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1090108621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1090108631) 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, 3385270 + ... + 3385591.

It is an arithmetic number, because the mean of its divisors is an integer number (162500688).

Almost surely, 2^1090108621 is an apocalyptic number.

It is an amenable number.

1090108621 is a deficient number, since it is larger than the sum of its proper divisors (209896883).

1090108621 is an equidigital number, since it uses as much as digits as its factorization.

1090108621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6770891.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 1090108621 is about 33016.7930150704. The cubic root of 1090108621 is about 1029.1766509051.

The spelling of 1090108621 in words is "one billion, ninety million, one hundred eight thousand, six hundred twenty-one".