1483181981 has 2 divisors, whose sum is σ = 1483181982. Its totient is φ = 1483181980.

The previous prime is 1483181957. The next prime is 1483181989. The reversal of 1483181981 is 1891813841.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1467579481 + 15602500 = 38309^2 + 3950^2 .

It is a cyclic number.

It is not a de Polignac number, because 1483181981 - 2¹⁴ = 1483165597 is a prime.

It is a super-2 number, since 2×1483181981² = 4399657577526168722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1483181989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 741590990 + 741590991.

It is an arithmetic number, because the mean of its divisors is an integer number (741590991).

Almost surely, 2^1483181981 is an apocalyptic number.

It is an amenable number.

1483181981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1483181981 is an equidigital number, since it uses as much as digits as its factorization.

1483181981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 44.

The square root of 1483181981 is about 38512.1017473729. The cubic root of 1483181981 is about 1140.4199696638.

The spelling of 1483181981 in words is "one billion, four hundred eighty-three million, one hundred eighty-one thousand, nine hundred eighty-one".