1144488253 has 4 divisors (see below), whose sum is σ = 1145513980. Its totient is φ = 1143462528.

The previous prime is 1144488251. The next prime is 1144488269. The reversal of 1144488253 is 3528844411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3528844411 = 17 ⋅207579083.

It can be written as a sum of positive squares in 2 ways, for example, as 385651044 + 758837209 = 19638^2 + 27547^2 .

It is a cyclic number.

It is not a de Polignac number, because 1144488253 - 2¹ = 1144488251 is a prime.

It is a super-2 number, since 2×1144488253² = 2619706722509984018, 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 (1144488251) 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, 511188 + ... + 513421.

It is an arithmetic number, because the mean of its divisors is an integer number (286378495).

Almost surely, 2^1144488253 is an apocalyptic number.

It is an amenable number.

1144488253 is a deficient number, since it is larger than the sum of its proper divisors (1025727).

1144488253 is a wasteful number, since it uses less digits than its factorization.

1144488253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025726.

The product of its digits is 122880, while the sum is 40.

The square root of 1144488253 is about 33830.2860318975. The cubic root of 1144488253 is about 1046.0130749279.

The spelling of 1144488253 in words is "one billion, one hundred forty-four million, four hundred eighty-eight thousand, two hundred fifty-three".