1151811072 has 120 divisors (see below), whose sum is σ = 3402096984. Its totient is φ = 374943744.

The previous prime is 1151811071. The next prime is 1151811083. The reversal of 1151811072 is 2701181511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151811071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 195238 + ... + 201050.

Almost surely, 2^1151811072 is an apocalyptic number.

1151811072 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 1151811072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1701048492).

1151811072 is an abundant number, since it is smaller than the sum of its proper divisors (2250285912).

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

1151811072 is an equidigital number, since it uses as much as digits as its factorization.

1151811072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5880 (or 5861 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 27.

The square root of 1151811072 is about 33938.3422105441. The cubic root of 1151811072 is about 1048.2392476720.

Adding to 1151811072 its reverse (2701181511), we get a palindrome (3852992583).

The spelling of 1151811072 in words is "one billion, one hundred fifty-one million, eight hundred eleven thousand, seventy-two".