1144632281 has 8 divisors (see below), whose sum is σ = 1242092544. Its totient is φ = 1048516560.

The previous prime is 1144632277. The next prime is 1144632289. The reversal of 1144632281 is 1822364411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1144632281 - 2² = 1144632277 is a prime.

It is a super-2 number, since 2×1144632281² = 2620366117414525922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1144632289) 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, 334361 + ... + 337766.

It is an arithmetic number, because the mean of its divisors is an integer number (155261568).

Almost surely, 2^1144632281 is an apocalyptic number.

It is an amenable number.

1144632281 is a deficient number, since it is larger than the sum of its proper divisors (97460263).

1144632281 is a wasteful number, since it uses less digits than its factorization.

1144632281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672271.

The product of its digits is 9216, while the sum is 32.

The square root of 1144632281 is about 33832.4146492679. The cubic root of 1144632281 is about 1046.0569515547.

Adding to 1144632281 its reverse (1822364411), we get a palindrome (2966996692).

The spelling of 1144632281 in words is "one billion, one hundred forty-four million, six hundred thirty-two thousand, two hundred eighty-one".