19950689460 has 96 divisors (see below), whose sum is σ = 60592129920. Its totient is φ = 4875581952.

The previous prime is 19950689449. The next prime is 19950689471. The reversal of 19950689460 is 6498605991.

It is an interprime number because it is at equal distance from previous prime (19950689449) and next prime (19950689471).

It is a self number, because there is not a number n which added to its sum of digits gives 19950689460.

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 16414 + ... + 200426.

It is an arithmetic number, because the mean of its divisors is an integer number (631168020).

Almost surely, 2^19950689460 is an apocalyptic number.

19950689460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19950689460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30296064960).

19950689460 is an abundant number, since it is smaller than the sum of its proper divisors (40641440460).

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

19950689460 is a wasteful number, since it uses less digits than its factorization.

19950689460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184177 (or 184175 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 57.

The spelling of 19950689460 in words is "nineteen billion, nine hundred fifty million, six hundred eighty-nine thousand, four hundred sixty".