1144220415 has 96 divisors (see below), whose sum is σ = 2069686080. Its totient is φ = 539136000.

The previous prime is 1144220381. The next prime is 1144220419. The reversal of 1144220415 is 5140224411.

It is not a de Polignac number, because 1144220415 - 2¹² = 1144216319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144220419) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10497381 + ... + 10497489.

It is an arithmetic number, because the mean of its divisors is an integer number (21559230).

Almost surely, 2^1144220415 is an apocalyptic number.

1144220415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1144220415 is a deficient number, since it is larger than the sum of its proper divisors (925465665).

1144220415 is a wasteful number, since it uses less digits than its factorization.

1144220415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285 (or 272 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 1144220415 is about 33826.3272466876. The cubic root of 1144220415 is about 1045.9314710883.

Adding to 1144220415 its reverse (5140224411), we get a palindrome (6284444826).

The spelling of 1144220415 in words is "one billion, one hundred forty-four million, two hundred twenty thousand, four hundred fifteen".