1151354220 has 24 divisors (see below), whose sum is σ = 3223791984. Its totient is φ = 307027776.

The previous prime is 1151354203. The next prime is 1151354221. The reversal of 1151354220 is 224531511.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1151354221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9594559 + ... + 9594678.

It is an arithmetic number, because the mean of its divisors is an integer number (134324666).

Almost surely, 2^1151354220 is an apocalyptic number.

1151354220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1151354220 is an abundant number, since it is smaller than the sum of its proper divisors (2072437764).

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

1151354220 is a wasteful number, since it uses less digits than its factorization.

1151354220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19189249 (or 19189247 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1151354220 is about 33931.6109255072. The cubic root of 1151354220 is about 1048.1006388504.

Adding to 1151354220 its reverse (224531511), we get a palindrome (1375885731).

The spelling of 1151354220 in words is "one billion, one hundred fifty-one million, three hundred fifty-four thousand, two hundred twenty".