1099855060 has 12 divisors (see below), whose sum is σ = 2309695668. Its totient is φ = 439942016.

The previous prime is 1099854979. The next prime is 1099855063. The reversal of 1099855060 is 605589901.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 709476496 + 390378564 = 26636^2 + 19758^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1099854998 and 1099855016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099855063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27496357 + ... + 27496396.

It is an arithmetic number, because the mean of its divisors is an integer number (192474639).

Almost surely, 2^1099855060 is an apocalyptic number.

1099855060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1099855060 is an abundant number, since it is smaller than the sum of its proper divisors (1209840608).

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

1099855060 is a wasteful number, since it uses less digits than its factorization.

1099855060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54992762 (or 54992760 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 43.

The square root of 1099855060 is about 33164.0627788575. The cubic root of 1099855060 is about 1032.2347744710.

The spelling of 1099855060 in words is "one billion, ninety-nine million, eight hundred fifty-five thousand, sixty".