1153440215 has 4 divisors (see below), whose sum is σ = 1384128264. Its totient is φ = 922752168.

The previous prime is 1153440203. The next prime is 1153440241. The reversal of 1153440215 is 5120443511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5120443511 = 42643 ⋅120077.

It is a cyclic number.

It is not a de Polignac number, because 1153440215 - 2¹⁰ = 1153439191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115344017 + ... + 115344026.

It is an arithmetic number, because the mean of its divisors is an integer number (346032066).

Almost surely, 2^1153440215 is an apocalyptic number.

1153440215 is a deficient number, since it is larger than the sum of its proper divisors (230688049).

1153440215 is an equidigital number, since it uses as much as digits as its factorization.

1153440215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230688048.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1153440215 is about 33962.3352406751. The cubic root of 1153440215 is about 1048.7332312072.

Adding to 1153440215 its reverse (5120443511), we get a palindrome (6273883726).

The spelling of 1153440215 in words is "one billion, one hundred fifty-three million, four hundred forty thousand, two hundred fifteen".