19802318532 has 12 divisors (see below), whose sum is σ = 46205409936. Its totient is φ = 6600772840.

The previous prime is 19802318513. The next prime is 19802318551. The reversal of 19802318532 is 23581320891.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (19802318513) and next prime (19802318551).

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 825096594 + ... + 825096617.

It is an arithmetic number, because the mean of its divisors is an integer number (3850450828).

Almost surely, 2^19802318532 is an apocalyptic number.

19802318532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19802318532 is an abundant number, since it is smaller than the sum of its proper divisors (26403091404).

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

19802318532 is a wasteful number, since it uses less digits than its factorization.

19802318532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650193218 (or 1650193216 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 19802318532 in words is "nineteen billion, eight hundred two million, three hundred eighteen thousand, five hundred thirty-two".