1156985088 has 288 divisors, whose sum is σ = 3798896640. Its totient is φ = 305233920.

The previous prime is 1156985087. The next prime is 1156985101. The reversal of 1156985088 is 8805896511.

It is a super-2 number, since 2×1156985088² = 2677228987708735488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1156985088.

It is not an unprimeable number, because it can be changed into a prime (1156985083) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 4800648 + ... + 4800888.

Almost surely, 2^1156985088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1156985088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1899448320).

1156985088 is an abundant number, since it is smaller than the sum of its proper divisors (2641911552).

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

1156985088 is a wasteful number, since it uses less digits than its factorization.

1156985088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 51.

The square root of 1156985088 is about 34014.4835033549. The cubic root of 1156985088 is about 1049.8064913238.

It can be divided in two parts, 115698 and 5088, that added together give a triangular number (120786 = T₄₉₁).

The spelling of 1156985088 in words is "one billion, one hundred fifty-six million, nine hundred eighty-five thousand, eighty-eight".