1135258656 has 192 divisors, whose sum is σ = 3628800000. Its totient is φ = 310050048.

The previous prime is 1135258637. The next prime is 1135258667. The reversal of 1135258656 is 6568525311.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 756595 + ... + 758093.

It is an arithmetic number, because the mean of its divisors is an integer number (18900000).

Almost surely, 2^1135258656 is an apocalyptic number.

1135258656 is a gapful number since it is divisible by the number (16) 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 1135258656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1814400000).

1135258656 is an abundant number, since it is smaller than the sum of its proper divisors (2493541344).

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

1135258656 is a wasteful number, since it uses less digits than its factorization.

1135258656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1556 (or 1534 counting only the distinct ones).

The product of its digits is 216000, while the sum is 42.

The square root of 1135258656 is about 33693.5996296032. The cubic root of 1135258656 is about 1043.1936640218.

The spelling of 1135258656 in words is "one billion, one hundred thirty-five million, two hundred fifty-eight thousand, six hundred fifty-six".