1151240443 has 4 divisors (see below), whose sum is σ = 1154200320. Its totient is φ = 1148280568.

The previous prime is 1151240429. The next prime is 1151240471. The reversal of 1151240443 is 3440421511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1151240443 - 2¹⁷ = 1151109371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1151240423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1479355 + ... + 1480132.

It is an arithmetic number, because the mean of its divisors is an integer number (288550080).

Almost surely, 2^1151240443 is an apocalyptic number.

1151240443 is a deficient number, since it is larger than the sum of its proper divisors (2959877).

1151240443 is an equidigital number, since it uses as much as digits as its factorization.

1151240443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2959876.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1151240443 is about 33929.9343205966. The cubic root of 1151240443 is about 1048.0661132247.

Adding to 1151240443 its reverse (3440421511), we get a palindrome (4591661954).

The spelling of 1151240443 in words is "one billion, one hundred fifty-one million, two hundred forty thousand, four hundred forty-three".