1153455641 has 4 divisors (see below), whose sum is σ = 1242183012. Its totient is φ = 1064728272.

The previous prime is 1153455631. The next prime is 1153455647. The reversal of 1153455641 is 1465543511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1465543511 = 19 ⋅77133869.

It can be written as a sum of positive squares in 2 ways, for example, as 56190016 + 1097265625 = 7496^2 + 33125^2 .

It is a cyclic number.

It is not a de Polignac number, because 1153455641 - 2⁶ = 1153455577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1153455647) 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 3 ways as a sum of consecutive naturals, for example, 44363666 + ... + 44363691.

It is an arithmetic number, because the mean of its divisors is an integer number (310545753).

Almost surely, 2^1153455641 is an apocalyptic number.

It is an amenable number.

1153455641 is a deficient number, since it is larger than the sum of its proper divisors (88727371).

1153455641 is an equidigital number, since it uses as much as digits as its factorization.

1153455641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88727370.

The product of its digits is 36000, while the sum is 35.

The square root of 1153455641 is about 33962.5623444404. The cubic root of 1153455641 is about 1048.7379064059.

The spelling of 1153455641 in words is "one billion, one hundred fifty-three million, four hundred fifty-five thousand, six hundred forty-one".