1099659132 has 144 divisors (see below), whose sum is σ = 3375284640. Its totient is φ = 307549440.

The previous prime is 1099659131. The next prime is 1099659151. The reversal of 1099659132 is 2319569901.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099659131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 166648 + ... + 173120.

Almost surely, 2^1099659132 is an apocalyptic number.

1099659132 is a gapful number since it is divisible by the number (12) 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 1099659132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1687642320).

1099659132 is an abundant number, since it is smaller than the sum of its proper divisors (2275625508).

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

1099659132 is a wasteful number, since it uses less digits than its factorization.

1099659132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6521 (or 6502 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 45.

The square root of 1099659132 is about 33161.1087269410. The cubic root of 1099659132 is about 1032.1734767865.

The spelling of 1099659132 in words is "one billion, ninety-nine million, six hundred fifty-nine thousand, one hundred thirty-two".