1980288205 has 32 divisors (see below), whose sum is σ = 2917152000. Its totient is φ = 1286421696.

The previous prime is 1980288199. The next prime is 1980288217. The reversal of 1980288205 is 5028820891.

It is a de Polignac number, because none of the positive numbers 2^k-1980288205 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2199 + ... + 62971.

It is an arithmetic number, because the mean of its divisors is an integer number (91161000).

Almost surely, 2^1980288205 is an apocalyptic number.

It is an amenable number.

1980288205 is a deficient number, since it is larger than the sum of its proper divisors (936863795).

1980288205 is an equidigital number, since it uses as much as digits as its factorization.

1980288205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60818 (or 60804 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 43.

The square root of 1980288205 is about 44500.4292675925. The cubic root of 1980288205 is about 1255.7681587998.

The spelling of 1980288205 in words is "one billion, nine hundred eighty million, two hundred eighty-eight thousand, two hundred five".