1144215340 has 24 divisors (see below), whose sum is σ = 2529318960. Its totient is φ = 433597248.

The previous prime is 1144215323. The next prime is 1144215349. The reversal of 1144215340 is 435124411.

It is not an unprimeable number, because it can be changed into a prime (1144215349) 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, 1505167 + ... + 1505926.

It is an arithmetic number, because the mean of its divisors is an integer number (105388290).

Almost surely, 2^1144215340 is an apocalyptic number.

1144215340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1144215340 is an abundant number, since it is smaller than the sum of its proper divisors (1385103620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1144215340 is a wasteful number, since it uses less digits than its factorization.

1144215340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3011121 (or 3011119 counting only the distinct ones).

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

The square root of 1144215340 is about 33826.2522310705. The cubic root of 1144215340 is about 1045.9299247341.

Adding to 1144215340 its reverse (435124411), we get a palindrome (1579339751).

The spelling of 1144215340 in words is "one billion, one hundred forty-four million, two hundred fifteen thousand, three hundred forty".