1144003615 has 4 divisors (see below), whose sum is σ = 1372804344. Its totient is φ = 915202888.

The previous prime is 1144003613. The next prime is 1144003649. The reversal of 1144003615 is 5163004411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1144003615 - 2¹ = 1144003613 is a prime.

It is a super-2 number, since 2×1144003615² = 2617488542266136450, which contains 22 as substring.

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 1144003615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144003613) 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, 114400357 + ... + 114400366.

It is an arithmetic number, because the mean of its divisors is an integer number (343201086).

Almost surely, 2^1144003615 is an apocalyptic number.

1144003615 is a deficient number, since it is larger than the sum of its proper divisors (228800729).

1144003615 is an equidigital number, since it uses as much as digits as its factorization.

1144003615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228800728.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1144003615 is about 33823.1224903911. The cubic root of 1144003615 is about 1045.8654079816.

The spelling of 1144003615 in words is "one billion, one hundred forty-four million, three thousand, six hundred fifteen".