1115253612 has 108 divisors (see below), whose sum is σ = 3110955120. Its totient is φ = 336621120.

The previous prime is 1115253563. The next prime is 1115253619. The reversal of 1115253612 is 2163525111.

1115253612 is a `hidden beast` number, since 1 + 115 + 2 + 536 + 12 = 666.

It is not an unprimeable number, because it can be changed into a prime (1115253619) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2190814 + ... + 2191322.

It is an arithmetic number, because the mean of its divisors is an integer number (28805140).

Almost surely, 2^1115253612 is an apocalyptic number.

1115253612 is a gapful number since it is divisible by the number (12) 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 1115253612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1555477560).

1115253612 is an abundant number, since it is smaller than the sum of its proper divisors (1995701508).

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

1115253612 is a wasteful number, since it uses less digits than its factorization.

1115253612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044 (or 1028 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 1115253612 is about 33395.4130383201. The cubic root of 1115253612 is about 1037.0297436656.

Adding to 1115253612 its reverse (2163525111), we get a palindrome (3278778723).

The spelling of 1115253612 in words is "one billion, one hundred fifteen million, two hundred fifty-three thousand, six hundred twelve".