9091855940 has 48 divisors (see below), whose sum is σ = 19223930880. Its totient is φ = 3611848320.

The previous prime is 9091855931. The next prime is 9091855943. The reversal of 9091855940 is 495581909.

9091855940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (9091855943) 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 15 ways as a sum of consecutive naturals, for example, 2951321 + ... + 2954399.

It is an arithmetic number, because the mean of its divisors is an integer number (400498560).

Almost surely, 2^9091855940 is an apocalyptic number.

It is an amenable number.

9091855940 is an abundant number, since it is smaller than the sum of its proper divisors (10132074940).

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

9091855940 is a wasteful number, since it uses less digits than its factorization.

9091855940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4052 (or 4050 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 50.

The square root of 9091855940 is about 95351.2241137994. The cubic root of 9091855940 is about 2087.1364781791.

The spelling of 9091855940 in words is "nine billion, ninety-one million, eight hundred fifty-five thousand, nine hundred forty".