1144094981 has 4 divisors (see below), whose sum is σ = 1144577472. Its totient is φ = 1143612492.

The previous prime is 1144094971. The next prime is 1144094983. The reversal of 1144094981 is 1894904411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1894904411 = 167 ⋅11346733.

It is a cyclic number.

It is not a de Polignac number, because 1144094981 - 2²⁶ = 1076986117 is a prime.

It is a super-2 number, since 2×1144094981² = 2617906651098780722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144094983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237671 + ... + 242436.

It is an arithmetic number, because the mean of its divisors is an integer number (286144368).

Almost surely, 2^1144094981 is an apocalyptic number.

It is an amenable number.

1144094981 is a deficient number, since it is larger than the sum of its proper divisors (482491).

1144094981 is an equidigital number, since it uses as much as digits as its factorization.

1144094981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482490.

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 1144094981 is about 33824.4731075001. The cubic root of 1144094981 is about 1045.8932499668.

The spelling of 1144094981 in words is "one billion, one hundred forty-four million, ninety-four thousand, nine hundred eighty-one".