1980365258 has 32 divisors (see below), whose sum is σ = 3240388800. Its totient is φ = 904055040.

The previous prime is 1980365249. The next prime is 1980365273. The reversal of 1980365258 is 8525630891.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213293 + ... + 222383.

It is an arithmetic number, because the mean of its divisors is an integer number (101262150).

Almost surely, 2^1980365258 is an apocalyptic number.

1980365258 is a deficient number, since it is larger than the sum of its proper divisors (1260023542).

1980365258 is a wasteful number, since it uses less digits than its factorization.

1980365258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9302.

The product of its (nonzero) digits is 518400, while the sum is 47.

The square root of 1980365258 is about 44501.2950148645. The cubic root of 1980365258 is about 1255.7844458986.

The spelling of 1980365258 in words is "one billion, nine hundred eighty million, three hundred sixty-five thousand, two hundred fifty-eight".