2045544445 has 48 divisors (see below), whose sum is σ = 3060402048. Its totient is φ = 1305279360.

The previous prime is 2045544437. The next prime is 2045544509. The reversal of 2045544445 is 5444455402.

It is not a de Polignac number, because 2045544445 - 2³ = 2045544437 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 203590 + ... + 213400.

It is an arithmetic number, because the mean of its divisors is an integer number (63758376).

Almost surely, 2^2045544445 is an apocalyptic number.

It is an amenable number.

2045544445 is a deficient number, since it is larger than the sum of its proper divisors (1014857603).

2045544445 is a wasteful number, since it uses less digits than its factorization.

2045544445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9890 (or 9883 counting only the distinct ones).

The product of its (nonzero) digits is 256000, while the sum is 37.

The square root of 2045544445 is about 45227.6955526147. The cubic root of 2045544445 is about 1269.4130929402.

Adding to 2045544445 its reverse (5444455402), we get a palindrome (7489999847).

The spelling of 2045544445 in words is "two billion, forty-five million, five hundred forty-four thousand, four hundred forty-five".