1141811553 has 8 divisors (see below), whose sum is σ = 1522809568. Its totient is φ = 761010624.

The previous prime is 1141811543. The next prime is 1141811557. The reversal of 1141811553 is 3551181411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1141811553 - 2¹⁴ = 1141795169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1141811553.

It is not an unprimeable number, because it can be changed into a prime (1141811557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35176 + ... + 59337.

It is an arithmetic number, because the mean of its divisors is an integer number (190351196).

Almost surely, 2^1141811553 is an apocalyptic number.

It is an amenable number.

1141811553 is a deficient number, since it is larger than the sum of its proper divisors (380998015).

1141811553 is an equidigital number, since it uses as much as digits as its factorization.

1141811553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98543.

The product of its digits is 2400, while the sum is 30.

The square root of 1141811553 is about 33790.7021679041. The cubic root of 1141811553 is about 1045.1969754528.

Adding to 1141811553 its reverse (3551181411), we get a palindrome (4692992964).

The spelling of 1141811553 in words is "one billion, one hundred forty-one million, eight hundred eleven thousand, five hundred fifty-three".