1045799645 has 16 divisors (see below), whose sum is σ = 1369787328. Its totient is φ = 760170240.

The previous prime is 1045799641. The next prime is 1045799647. The reversal of 1045799645 is 5469975401.

It is not a de Polignac number, because 1045799645 - 2² = 1045799641 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1045799593 and 1045799602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045799641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129002 + ... + 136868.

It is an arithmetic number, because the mean of its divisors is an integer number (85611708).

Almost surely, 2^1045799645 is an apocalyptic number.

It is an amenable number.

1045799645 is a deficient number, since it is larger than the sum of its proper divisors (323987683).

1045799645 is a wasteful number, since it uses less digits than its factorization.

1045799645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10300.

The product of its (nonzero) digits is 1360800, while the sum is 50.

The square root of 1045799645 is about 32338.8256589506. The cubic root of 1045799645 is about 1015.0392358667.

The spelling of 1045799645 in words is "one billion, forty-five million, seven hundred ninety-nine thousand, six hundred forty-five".