2800645369 has 4 divisors (see below), whose sum is σ = 2890988800. Its totient is φ = 2710301940.

The previous prime is 2800645361. The next prime is 2800645373. The reversal of 2800645369 is 9635460082.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2800645369 - 2³ = 2800645361 is a prime.

It is a super-2 number, since 2×2800645369² = 15687228965802292322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2800645361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45171669 + ... + 45171730.

It is an arithmetic number, because the mean of its divisors is an integer number (722747200).

Almost surely, 2^2800645369 is an apocalyptic number.

It is an amenable number.

2800645369 is a deficient number, since it is larger than the sum of its proper divisors (90343431).

2800645369 is an equidigital number, since it uses as much as digits as its factorization.

2800645369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90343430.

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 2800645369 is about 52921.1240337920. The cubic root of 2800645369 is about 1409.5680263832.

The spelling of 2800645369 in words is "two billion, eight hundred million, six hundred forty-five thousand, three hundred sixty-nine".