1140544213 has 4 divisors (see below), whose sum is σ = 1156608288. Its totient is φ = 1124480140.

The previous prime is 1140544199. The next prime is 1140544247. The reversal of 1140544213 is 3124450411.

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 a de Polignac number, because none of the positive numbers 2^k-1140544213 is a prime.

It is a super-2 number, since 2×1140544213² = 2601682203615578738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140544313) 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, 8031931 + ... + 8032072.

It is an arithmetic number, because the mean of its divisors is an integer number (289152072).

Almost surely, 2^1140544213 is an apocalyptic number.

It is an amenable number.

1140544213 is a deficient number, since it is larger than the sum of its proper divisors (16064075).

1140544213 is an equidigital number, since it uses as much as digits as its factorization.

1140544213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16064074.

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

The square root of 1140544213 is about 33771.9441696803. The cubic root of 1140544213 is about 1044.8101310225.

Adding to 1140544213 its reverse (3124450411), we get a palindrome (4264994624).

The spelling of 1140544213 in words is "one billion, one hundred forty million, five hundred forty-four thousand, two hundred thirteen".