1158971880 has 192 divisors, whose sum is σ = 4023835200. Its totient is φ = 266112000.

The previous prime is 1158971867. The next prime is 1158971893. The reversal of 1158971880 is 881798511.

It is an interprime number because it is at equal distance from previous prime (1158971867) and next prime (1158971893).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 273780 + ... + 277980.

It is an arithmetic number, because the mean of its divisors is an integer number (20957475).

Almost surely, 2^1158971880 is an apocalyptic number.

1158971880 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 1158971880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2011917600).

1158971880 is an abundant number, since it is smaller than the sum of its proper divisors (2864863320).

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

1158971880 is a wasteful number, since it uses less digits than its factorization.

1158971880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4256 (or 4241 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 48.

The square root of 1158971880 is about 34043.6760647260. The cubic root of 1158971880 is about 1050.4070621251.

The spelling of 1158971880 in words is "one billion, one hundred fifty-eight million, nine hundred seventy-one thousand, eight hundred eighty".