2045206569 has 32 divisors (see below), whose sum is σ = 3320110080. Its totient is φ = 1093822272.

The previous prime is 2045206489. The next prime is 2045206577. The reversal of 2045206569 is 9656025402.

It is not a de Polignac number, because 2045206569 - 2⁷ = 2045206441 is a prime.

It is a super-2 number, since 2×2045206569² = 8365739819761503522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2045206769) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2239 + ... + 63995.

It is an arithmetic number, because the mean of its divisors is an integer number (103753440).

Almost surely, 2^2045206569 is an apocalyptic number.

It is an amenable number.

2045206569 is a deficient number, since it is larger than the sum of its proper divisors (1274903511).

2045206569 is a wasteful number, since it uses less digits than its factorization.

2045206569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61869.

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 2045206569 is about 45223.9601207148. The cubic root of 2045206569 is about 1269.3431966613.

The spelling of 2045206569 in words is "two billion, forty-five million, two hundred six thousand, five hundred sixty-nine".