1099854100 has 72 divisors (see below), whose sum is σ = 2538587520. Its totient is φ = 412177920.

The previous prime is 1099854071. The next prime is 1099854101. The reversal of 1099854100 is 14589901.

It is a self number, because there is not a number n which added to its sum of digits gives 1099854100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099854101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 404947 + ... + 407653.

It is an arithmetic number, because the mean of its divisors is an integer number (35258160).

Almost surely, 2^1099854100 is an apocalyptic number.

1099854100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1099854100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1269293760).

1099854100 is an abundant number, since it is smaller than the sum of its proper divisors (1438733420).

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

1099854100 is a wasteful number, since it uses less digits than its factorization.

1099854100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2977 (or 2970 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 1099854100 is about 33164.0483053562. The cubic root of 1099854100 is about 1032.2344741448.

The spelling of 1099854100 in words is "one billion, ninety-nine million, eight hundred fifty-four thousand, one hundred".