1099725816 has 96 divisors (see below), whose sum is σ = 3243473280. Its totient is φ = 309758400.

The previous prime is 1099725769. The next prime is 1099725827. The reversal of 1099725816 is 6185279901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76911 + ... + 90081.

It is an arithmetic number, because the mean of its divisors is an integer number (33786180).

Almost surely, 2^1099725816 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 1099725816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1621736640).

1099725816 is an abundant number, since it is smaller than the sum of its proper divisors (2143747464).

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

1099725816 is a wasteful number, since it uses less digits than its factorization.

1099725816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13265 (or 13254 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 48.

The square root of 1099725816 is about 33162.1141666209. The cubic root of 1099725816 is about 1032.1943402410.

The spelling of 1099725816 in words is "one billion, ninety-nine million, seven hundred twenty-five thousand, eight hundred sixteen".