1455545789 has 2 divisors, whose sum is σ = 1455545790. Its totient is φ = 1455545788.

The previous prime is 1455545761. The next prime is 1455545803. The reversal of 1455545789 is 9875455541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 856030564 + 599515225 = 29258^2 + 24485^2 .

It is a cyclic number.

It is not a de Polignac number, because 1455545789 - 2¹² = 1455541693 is a prime.

It is a super-2 number, since 2×1455545789² = 4237227087751265042, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1455545789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1455545719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 727772894 + 727772895.

It is an arithmetic number, because the mean of its divisors is an integer number (727772895).

Almost surely, 2^1455545789 is an apocalyptic number.

It is an amenable number.

1455545789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1455545789 is an equidigital number, since it uses as much as digits as its factorization.

1455545789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040000, while the sum is 53.

The square root of 1455545789 is about 38151.6158111292. The cubic root of 1455545789 is about 1133.2923505269.

The spelling of 1455545789 in words is "one billion, four hundred fifty-five million, five hundred forty-five thousand, seven hundred eighty-nine".