2003451445 has 16 divisors (see below), whose sum is σ = 2549754288. Its totient is φ = 1505996800.

The previous prime is 2003451431. The next prime is 2003451451. The reversal of 2003451445 is 5441543002.

It can be written as a sum of positive squares in 8 ways, for example, as 161239204 + 1842212241 = 12698^2 + 42921^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2003451445 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 33345 + ... + 71545.

It is an arithmetic number, because the mean of its divisors is an integer number (159359643).

Almost surely, 2^2003451445 is an apocalyptic number.

It is an amenable number.

2003451445 is a deficient number, since it is larger than the sum of its proper divisors (546302843).

2003451445 is a wasteful number, since it uses less digits than its factorization.

2003451445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38840.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 2003451445 is about 44759.9312443618. The cubic root of 2003451445 is about 1260.6453914184.

Adding to 2003451445 its reverse (5441543002), we get a palindrome (7444994447).

The spelling of 2003451445 in words is "two billion, three million, four hundred fifty-one thousand, four hundred forty-five".