1158043880 has 64 divisors (see below), whose sum is σ = 3005735040. Its totient is φ = 393322752.

The previous prime is 1158043877. The next prime is 1158043903. The reversal of 1158043880 is 883408511.

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, 10634 + ... + 49286.

It is an arithmetic number, because the mean of its divisors is an integer number (46964610).

Almost surely, 2^1158043880 is an apocalyptic number.

1158043880 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 1158043880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1502867520).

1158043880 is an abundant number, since it is smaller than the sum of its proper divisors (1847691160).

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

1158043880 is a wasteful number, since it uses less digits than its factorization.

1158043880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38778 (or 38774 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 1158043880 is about 34030.0437848675. The cubic root of 1158043880 is about 1050.1266302304.

The spelling of 1158043880 in words is "one billion, one hundred fifty-eight million, forty-three thousand, eight hundred eighty".