20188503214 has 24 divisors (see below), whose sum is σ = 34185640104. Its totient is φ = 8928572400.

The previous prime is 20188503199. The next prime is 20188503277. The reversal of 20188503214 is 41230588102.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20188503214.

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 11 ways as a sum of consecutive naturals, for example, 1118392 + ... + 1136299.

It is an arithmetic number, because the mean of its divisors is an integer number (1424401671).

Almost surely, 2^20188503214 is an apocalyptic number.

20188503214 is a deficient number, since it is larger than the sum of its proper divisors (13997136890).

20188503214 is a wasteful number, since it uses less digits than its factorization.

20188503214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2254752 (or 2254741 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The spelling of 20188503214 in words is "twenty billion, one hundred eighty-eight million, five hundred three thousand, two hundred fourteen".