19980458958 has 32 divisors (see below), whose sum is σ = 40479528960. Its totient is φ = 6573771360.

The previous prime is 19980458917. The next prime is 19980458959. The reversal of 19980458958 is 85985408991.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19980458959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2459323 + ... + 2467433.

It is an arithmetic number, because the mean of its divisors is an integer number (1264985280).

Almost surely, 2^19980458958 is an apocalyptic number.

19980458958 is an abundant number, since it is smaller than the sum of its proper divisors (20499070002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19980458958 is a wasteful number, since it uses less digits than its factorization.

19980458958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13392.

The product of its (nonzero) digits is 37324800, while the sum is 66.

The spelling of 19980458958 in words is "nineteen billion, nine hundred eighty million, four hundred fifty-eight thousand, nine hundred fifty-eight".