1044986981 has 2 divisors, whose sum is σ = 1044986982. Its totient is φ = 1044986980.

The previous prime is 1044986977. The next prime is 1044987001. The reversal of 1044986981 is 1896894401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 797554081 + 247432900 = 28241^2 + 15730^2 .

It is a cyclic number.

It is not a de Polignac number, because 1044986981 - 2² = 1044986977 is a prime.

It is a super-2 number, since 2×1044986981² = 2183995580918988722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1044986911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 522493490 + 522493491.

It is an arithmetic number, because the mean of its divisors is an integer number (522493491).

Almost surely, 2^1044986981 is an apocalyptic number.

It is an amenable number.

1044986981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1044986981 is an equidigital number, since it uses as much as digits as its factorization.

1044986981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 50.

The square root of 1044986981 is about 32326.2583823120. The cubic root of 1044986981 is about 1014.7762474419.

The spelling of 1044986981 in words is "one billion, forty-four million, nine hundred eighty-six thousand, nine hundred eighty-one".