2003964645 has 16 divisors (see below), whose sum is σ = 3210630912. Its totient is φ = 1067352000.

The previous prime is 2003964643. The next prime is 2003964661. The reversal of 2003964645 is 5464693002.

It is not a de Polignac number, because 2003964645 - 2¹ = 2003964643 is a prime.

It is a super-3 number, since 3×2003964645³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003964643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77682 + ... + 100211.

It is an arithmetic number, because the mean of its divisors is an integer number (200664432).

Almost surely, 2^2003964645 is an apocalyptic number.

It is an amenable number.

2003964645 is a deficient number, since it is larger than the sum of its proper divisors (1206666267).

2003964645 is a wasteful number, since it uses less digits than its factorization.

2003964645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178652.

The product of its (nonzero) digits is 155520, while the sum is 39.

The square root of 2003964645 is about 44765.6636832294. The cubic root of 2003964645 is about 1260.7530236718.

The spelling of 2003964645 in words is "two billion, three million, nine hundred sixty-four thousand, six hundred forty-five".