1099957320 has 320 divisors, whose sum is σ = 4610390400. Its totient is φ = 228510720.

The previous prime is 1099957223. The next prime is 1099957343. The reversal of 1099957320 is 237599901.

It is a happy number.

It is a super-2 number, since 2×1099957320² = 2419812211643164800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 247276 + ... + 251684.

It is an arithmetic number, because the mean of its divisors is an integer number (14407470).

Almost surely, 2^1099957320 is an apocalyptic number.

1099957320 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 1099957320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2305195200).

1099957320 is an abundant number, since it is smaller than the sum of its proper divisors (3510433080).

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

1099957320 is a wasteful number, since it uses less digits than its factorization.

1099957320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4450 (or 4437 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 45.

The square root of 1099957320 is about 33165.6044721033. The cubic root of 1099957320 is about 1032.2667644609.

The spelling of 1099957320 in words is "one billion, ninety-nine million, nine hundred fifty-seven thousand, three hundred twenty".