1099016550 has 144 divisors (see below), whose sum is σ = 3059737200. Its totient is φ = 282597120.

The previous prime is 1099016543. The next prime is 1099016551. The reversal of 1099016550 is 556109901.

1099016550 is a `hidden beast` number, since 1 + 0 + 9 + 90 + 16 + 550 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099016551) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2480629 + ... + 2481071.

It is an arithmetic number, because the mean of its divisors is an integer number (21248175).

Almost surely, 2^1099016550 is an apocalyptic number.

1099016550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1099016550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1529868600).

1099016550 is an abundant number, since it is smaller than the sum of its proper divisors (1960720650).

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

1099016550 is a wasteful number, since it uses less digits than its factorization.

1099016550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647 (or 639 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 36.

The square root of 1099016550 is about 33151.4185216862. The cubic root of 1099016550 is about 1031.9723886159.

The spelling of 1099016550 in words is "one billion, ninety-nine million, sixteen thousand, five hundred fifty".