1099143864 has 256 divisors, whose sum is σ = 3790080000. Its totient is φ = 287400960.

The previous prime is 1099143847. The next prime is 1099143889. The reversal of 1099143864 is 4683419901.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3911404 + ... + 3911684.

It is an arithmetic number, because the mean of its divisors is an integer number (14805000).

Almost surely, 2^1099143864 is an apocalyptic number.

1099143864 is a gapful number since it is divisible by the number (14) 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 1099143864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1895040000).

1099143864 is an abundant number, since it is smaller than the sum of its proper divisors (2690936136).

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

1099143864 is a wasteful number, since it uses less digits than its factorization.

1099143864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515 (or 505 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 1099143864 is about 33153.3386554054. The cubic root of 1099143864 is about 1032.0122361989.

The spelling of 1099143864 in words is "one billion, ninety-nine million, one hundred forty-three thousand, eight hundred sixty-four".