1151204441 has 4 divisors (see below), whose sum is σ = 1201256832. Its totient is φ = 1101152052.

The previous prime is 1151204423. The next prime is 1151204443. The reversal of 1151204441 is 1444021511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1151204441 - 2⁶ = 1151204377 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 50052367 = 1151204441 / (1 + 1 + 5 + 1 + 2 + 0 + 4 + 4 + 4 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1151204443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25026161 + ... + 25026206.

It is an arithmetic number, because the mean of its divisors is an integer number (300314208).

Almost surely, 2^1151204441 is an apocalyptic number.

It is an amenable number.

1151204441 is a deficient number, since it is larger than the sum of its proper divisors (50052391).

1151204441 is an equidigital number, since it uses as much as digits as its factorization.

1151204441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50052390.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 1151204441 is about 33929.4037819706. The cubic root of 1151204441 is about 1048.0551879456.

Adding to 1151204441 its reverse (1444021511), we get a palindrome (2595225952).

The spelling of 1151204441 in words is "one billion, one hundred fifty-one million, two hundred four thousand, four hundred forty-one".