1045958981 has 2 divisors, whose sum is σ = 1045958982. Its totient is φ = 1045958980.

The previous prime is 1045958951. The next prime is 1045959041. The reversal of 1045958981 is 1898595401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 915062500 + 130896481 = 30250^2 + 11441^2 .

It is an emirp because it is prime and its reverse (1898595401) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1045958981 is a prime.

It is a super-2 number, since 2×1045958981² = 2188060379869116722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1045958951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 522979490 + 522979491.

It is an arithmetic number, because the mean of its divisors is an integer number (522979491).

Almost surely, 2^1045958981 is an apocalyptic number.

It is an amenable number.

1045958981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1045958981 is an equidigital number, since it uses as much as digits as its factorization.

1045958981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 518400, while the sum is 50.

The square root of 1045958981 is about 32341.2891054145. The cubic root of 1045958981 is about 1015.0907830502.

The spelling of 1045958981 in words is "one billion, forty-five million, nine hundred fifty-eight thousand, nine hundred eighty-one".