1450721673 has 24 divisors (see below), whose sum is σ = 2222731368. Its totient is φ = 908623872.

The previous prime is 1450721669. The next prime is 1450721689. The reversal of 1450721673 is 3761270541.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1288235664 + 162486009 = 35892^2 + 12747^2 .

It is not a de Polignac number, because 1450721673 - 2² = 1450721669 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1450722673) 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 in 23 ways as a sum of consecutive naturals, for example, 80065 + ... + 96497.

It is an arithmetic number, because the mean of its divisors is an integer number (92613807).

Almost surely, 2^1450721673 is an apocalyptic number.

It is an amenable number.

1450721673 is a deficient number, since it is larger than the sum of its proper divisors (772009695).

1450721673 is a wasteful number, since it uses less digits than its factorization.

1450721673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17033 (or 17030 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 1450721673 is about 38088.3403812768. The cubic root of 1450721673 is about 1132.0389410141.

The spelling of 1450721673 in words is "one billion, four hundred fifty million, seven hundred twenty-one thousand, six hundred seventy-three".