1054043509 has 2 divisors, whose sum is σ = 1054043510. Its totient is φ = 1054043508.

The previous prime is 1054043491. The next prime is 1054043513. The reversal of 1054043509 is 9053404501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 886729284 + 167314225 = 29778^2 + 12935^2 .

It is a cyclic number.

It is not a de Polignac number, because 1054043509 - 2⁷ = 1054043381 is a prime.

It is a super-2 number, since 2×1054043509² = 2222015437730066162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1054043519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527021754 + 527021755.

It is an arithmetic number, because the mean of its divisors is an integer number (527021755).

Almost surely, 2^1054043509 is an apocalyptic number.

It is an amenable number.

1054043509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1054043509 is an equidigital number, since it uses as much as digits as its factorization.

1054043509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 1054043509 is about 32466.0362378902. The cubic root of 1054043509 is about 1017.6993864988.

The spelling of 1054043509 in words is "one billion, fifty-four million, forty-three thousand, five hundred nine".