1144421851 has 8 divisors (see below), whose sum is σ = 1215317520. Its totient is φ = 1074592512.

The previous prime is 1144421849. The next prime is 1144421869. The reversal of 1144421851 is 1581244411.

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

It is a cyclic number.

It is not a de Polignac number, because 1144421851 - 2¹ = 1144421849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1144421881) 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, 264370 + ... + 268663.

It is an arithmetic number, because the mean of its divisors is an integer number (151914690).

Almost surely, 2^1144421851 is an apocalyptic number.

1144421851 is a deficient number, since it is larger than the sum of its proper divisors (70895669).

1144421851 is a wasteful number, since it uses less digits than its factorization.

1144421851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533165.

The product of its digits is 5120, while the sum is 31.

The square root of 1144421851 is about 33829.3046189247. The cubic root of 1144421851 is about 1045.9928450120.

The spelling of 1144421851 in words is "one billion, one hundred forty-four million, four hundred twenty-one thousand, eight hundred fifty-one".