219800138 has 8 divisors (see below), whose sum is σ = 329821632. Its totient is φ = 109859596.

The previous prime is 219800131. The next prime is 219800143. The reversal of 219800138 is 831008912.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (219800131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12920 + ... + 24627.

It is an arithmetic number, because the mean of its divisors is an integer number (41227704).

Almost surely, 2^219800138 is an apocalyptic number.

219800138 is a deficient number, since it is larger than the sum of its proper divisors (110021494).

219800138 is a wasteful number, since it uses less digits than its factorization.

219800138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40476.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 219800138 is about 14825.6580966917. The cubic root of 219800138 is about 603.4982108594.

The spelling of 219800138 in words is "two hundred nineteen million, eight hundred thousand, one hundred thirty-eight".