1144981 has 2 divisors, whose sum is σ = 1144982. Its totient is φ = 1144980.

The previous prime is 1144973. The next prime is 1144993. The reversal of 1144981 is 1894411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1144900 + 81 = 1070^2 + 9^2 .

It is an emirp because it is prime and its reverse (1894411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1144981 - 2³ = 1144973 is a prime.

It is a super-2 number, since 2×1144981² = 2621962980722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1144901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572490 + 572491.

It is an arithmetic number, because the mean of its divisors is an integer number (572491).

2^1144981 is an apocalyptic number.

It is an amenable number.

1144981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1144981 is an equidigital number, since it uses as much as digits as its factorization.

1144981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 28.

The square root of 1144981 is about 1070.0378497978. The cubic root of 1144981 is about 104.6163169916.

It can be divided in two parts, 11449 and 81, that multiplied together give a square (927369 = 963²).

The spelling of 1144981 in words is "one million, one hundred forty-four thousand, nine hundred eighty-one".