84380198138 has 8 divisors (see below), whose sum is σ = 126637306740. Its totient is φ = 42167762560.

The previous prime is 84380198137. The next prime is 84380198167. The reversal of 84380198138 is 83189108348.

It can be written as a sum of positive squares in 2 ways, for example, as 83262833809 + 1117364329 = 288553^2 + 33427^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 84380198138.

It is not an unprimeable number, because it can be changed into a prime (84380198137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11163533 + ... + 11171088.

Almost surely, 2^84380198138 is an apocalyptic number.

84380198138 is a deficient number, since it is larger than the sum of its proper divisors (42257108602).

84380198138 is a wasteful number, since it uses less digits than its factorization.

84380198138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22336512.

The product of its (nonzero) digits is 1327104, while the sum is 53.

The spelling of 84380198138 in words is "eighty-four billion, three hundred eighty million, one hundred ninety-eight thousand, one hundred thirty-eight".