1158995264 has 112 divisors (see below), whose sum is σ = 2873410560. Its totient is φ = 452321280.

The previous prime is 1158995263. The next prime is 1158995287. The reversal of 1158995264 is 4625998511.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158995263) 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, 233642 + ... + 238550.

Almost surely, 2^1158995264 is an apocalyptic number.

1158995264 is a gapful number since it is divisible by the number (14) 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 1158995264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1436705280).

1158995264 is an abundant number, since it is smaller than the sum of its proper divisors (1714415296).

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

1158995264 is a wasteful number, since it uses less digits than its factorization.

1158995264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4976 (or 4966 counting only the distinct ones).

The product of its digits is 777600, while the sum is 50.

The square root of 1158995264 is about 34044.0195041655. The cubic root of 1158995264 is about 1050.4141265915.

The spelling of 1158995264 in words is "one billion, one hundred fifty-eight million, nine hundred ninety-five thousand, two hundred sixty-four".