1158789680 has 80 divisors (see below), whose sum is σ = 2887475904. Its totient is φ = 431354880.

The previous prime is 1158789679. The next prime is 1158789707. The reversal of 1158789680 is 869878511.

It is a Cunningham number, because it is equal to 34041²-1.

It is a tau number, because it is divible by the number of its divisors (80).

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, 59570 + ... + 76590.

Almost surely, 2^1158789680 is an apocalyptic number.

1158789680 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 1158789680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1443737952).

1158789680 is an abundant number, since it is smaller than the sum of its proper divisors (1728686224).

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

1158789680 is a wasteful number, since it uses less digits than its factorization.

1158789680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17094 (or 17088 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 53.

The square root of 1158789680 is about 34040.9999853118. Note that the first 4 decimals coincide. The cubic root of 1158789680 is about 1050.3520150039.

The spelling of 1158789680 in words is "one billion, one hundred fifty-eight million, seven hundred eighty-nine thousand, six hundred eighty".