1081910788 has 144 divisors (see below), whose sum is σ = 2406716928. Its totient is φ = 423360000.

The previous prime is 1081910771. The next prime is 1081910803. The reversal of 1081910788 is 8870191801.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 10711938 + ... + 10712038.

It is an arithmetic number, because the mean of its divisors is an integer number (16713312).

Almost surely, 2^1081910788 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1081910788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1203358464).

1081910788 is an abundant number, since it is smaller than the sum of its proper divisors (1324806140).

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

1081910788 is a wasteful number, since it uses less digits than its factorization.

1081910788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 43.

The square root of 1081910788 is about 32892.4123165207. The cubic root of 1081910788 is about 1026.5902858695.

The spelling of 1081910788 in words is "one billion, eighty-one million, nine hundred ten thousand, seven hundred eighty-eight".