1445010989 has 2 divisors, whose sum is σ = 1445010990. Its totient is φ = 1445010988.

The previous prime is 1445010979. The next prime is 1445010991. The reversal of 1445010989 is 9890105441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1132322500 + 312688489 = 33650^2 + 17683^2 .

It is a cyclic number.

It is not a de Polignac number, because 1445010989 - 2⁸ = 1445010733 is a prime.

Together with 1445010991, it forms a pair of twin primes.

It is a Chen prime.

1445010989 is a modest number, since divided by 10989 gives 1445 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1445010979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722505494 + 722505495.

It is an arithmetic number, because the mean of its divisors is an integer number (722505495).

Almost surely, 2^1445010989 is an apocalyptic number.

It is an amenable number.

1445010989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1445010989 is an equidigital number, since it uses as much as digits as its factorization.

1445010989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 1445010989 is about 38013.3001592864. The cubic root of 1445010989 is about 1130.5515852031.

The spelling of 1445010989 in words is "one billion, four hundred forty-five million, ten thousand, nine hundred eighty-nine".