2045606645 has 16 divisors (see below), whose sum is σ = 2546449920. Its totient is φ = 1576348800.

The previous prime is 2045606639. The next prime is 2045606699. The reversal of 2045606645 is 5466065402.

It is not a de Polignac number, because 2045606645 - 2⁶ = 2045606581 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2045606599 and 2045606608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46961 + ... + 79350.

It is an arithmetic number, because the mean of its divisors is an integer number (159153120).

Almost surely, 2^2045606645 is an apocalyptic number.

It is an amenable number.

2045606645 is a deficient number, since it is larger than the sum of its proper divisors (500843275).

2045606645 is a wasteful number, since it uses less digits than its factorization.

2045606645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126436.

The product of its (nonzero) digits is 172800, while the sum is 38.

The square root of 2045606645 is about 45228.3831791498. The cubic root of 2045606645 is about 1269.4259593916.

The spelling of 2045606645 in words is "two billion, forty-five million, six hundred six thousand, six hundred forty-five".