1090985664 has 28 divisors (see below), whose sum is σ = 2886566744. Its totient is φ = 363661824.

The previous prime is 1090985647. The next prime is 1090985669. The reversal of 1090985664 is 4665890901.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1090985669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2840917 + ... + 2841300.

Almost surely, 2^1090985664 is an apocalyptic number.

It is an amenable number.

1090985664 is an abundant number, since it is smaller than the sum of its proper divisors (1795581080).

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

1090985664 is an equidigital number, since it uses as much as digits as its factorization.

1090985664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5682232 (or 5682222 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 48.

The square root of 1090985664 is about 33030.0721161792. The cubic root of 1090985664 is about 1029.4525837184.

The spelling of 1090985664 in words is "one billion, ninety million, nine hundred eighty-five thousand, six hundred sixty-four".