1156265088 has 128 divisors (see below), whose sum is σ = 3364727040. Its totient is φ = 348902400.

The previous prime is 1156265087. The next prime is 1156265101. The reversal of 1156265088 is 8805626511.

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

It is not an unprimeable number, because it can be changed into a prime (1156265087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1397731 + ... + 1398557.

It is an arithmetic number, because the mean of its divisors is an integer number (26286930).

Almost surely, 2^1156265088 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 1156265088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1682363520).

1156265088 is an abundant number, since it is smaller than the sum of its proper divisors (2208461952).

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

1156265088 is a wasteful number, since it uses less digits than its factorization.

1156265088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186 (or 1174 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 42.

The square root of 1156265088 is about 34003.8981294792. The cubic root of 1156265088 is about 1049.5886788016.

The spelling of 1156265088 in words is "one billion, one hundred fifty-six million, two hundred sixty-five thousand, eighty-eight".