1144206281 has 8 divisors (see below), whose sum is σ = 1184059200. Its totient is φ = 1104379920.

The previous prime is 1144206253. The next prime is 1144206299. The reversal of 1144206281 is 1826024411.

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 1144206281 - 2¹⁴ = 1144189897 is a prime.

It is a super-2 number, since 2×1144206281² = 2618416026959701922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1144206181) 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, 126686 + ... + 135416.

It is an arithmetic number, because the mean of its divisors is an integer number (148007400).

Almost surely, 2^1144206281 is an apocalyptic number.

1144206281 is the 15128-th centered decagonal number.

It is an amenable number.

1144206281 is a deficient number, since it is larger than the sum of its proper divisors (39852919).

1144206281 is an equidigital number, since it uses as much as digits as its factorization.

1144206281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13279.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 1144206281 is about 33826.1183259327. The cubic root of 1144206281 is about 1045.9271644424.

The spelling of 1144206281 in words is "one billion, one hundred forty-four million, two hundred six thousand, two hundred eighty-one".