1099098144 has 144 divisors (see below), whose sum is σ = 3423976920. Its totient is φ = 332881920.

The previous prime is 1099098131. The next prime is 1099098157. The reversal of 1099098144 is 4418909901.

It is an interprime number because it is at equal distance from previous prime (1099098131) and next prime (1099098157).

It can be written as a sum of positive squares in 4 ways, for example, as 940035600 + 159062544 = 30660^2 + 12612^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is a self number, because there is not a number n which added to its sum of digits gives 1099098144.

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, 138114 + ... + 145854.

Almost surely, 2^1099098144 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 1099098144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1711988460).

1099098144 is an abundant number, since it is smaller than the sum of its proper divisors (2324878776).

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

1099098144 is a wasteful number, since it uses less digits than its factorization.

1099098144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7803 (or 7792 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 1099098144 is about 33152.6491249191. The cubic root of 1099098144 is about 1031.9979268031.

The spelling of 1099098144 in words is "one billion, ninety-nine million, ninety-eight thousand, one hundred forty-four".