1158099072 has 128 divisors (see below), whose sum is σ = 3338664000. Its totient is φ = 353562624.

The previous prime is 1158099067. The next prime is 1158099097. The reversal of 1158099072 is 2709908511.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×1158099072² = 2682386921134522368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 693054 + ... + 694722.

Almost surely, 2^1158099072 is an apocalyptic number.

1158099072 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 1158099072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1669332000).

1158099072 is an abundant number, since it is smaller than the sum of its proper divisors (2180564928).

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

1158099072 is a wasteful number, since it uses less digits than its factorization.

1158099072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838 (or 1826 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 42.

The square root of 1158099072 is about 34030.8547056932. The cubic root of 1158099072 is about 1050.1433128649.

The spelling of 1158099072 in words is "one billion, one hundred fifty-eight million, ninety-nine thousand, seventy-two".