802020945 has 32 divisors (see below), whose sum is σ = 1401338880. Its totient is φ = 388456640.

The previous prime is 802020941. The next prime is 802021001. The reversal of 802020945 is 549020208.

It is not a de Polignac number, because 802020945 - 2² = 802020941 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (802020941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 213796 + ... + 217514.

It is an arithmetic number, because the mean of its divisors is an integer number (43791840).

Almost surely, 2^802020945 is an apocalyptic number.

It is an amenable number.

802020945 is a deficient number, since it is larger than the sum of its proper divisors (599317935).

802020945 is a wasteful number, since it uses less digits than its factorization.

802020945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5045.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 802020945 is about 28319.9743114290. The cubic root of 802020945 is about 929.0988090519.

The spelling of 802020945 in words is "eight hundred two million, twenty thousand, nine hundred forty-five".