1638286214994 has 256 divisors, whose sum is σ = 4392793036800. Its totient is φ = 446021856000.

The previous prime is 1638286214969. The next prime is 1638286215019. The reversal of 1638286214994 is 4994126828361.

1638286214994 is a `hidden beast` number, since 1 + 6 + 3 + 82 + 8 + 62 + 1 + 499 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (1638286214969) and next prime (1638286215019).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 45997597 + ... + 46033199.

It is an arithmetic number, because the mean of its divisors is an integer number (17159347800).

Almost surely, 2^{1638286214994} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1638286214994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2196396518400).

1638286214994 is an abundant number, since it is smaller than the sum of its proper divisors (2754506821806).

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

1638286214994 is a wasteful number, since it uses less digits than its factorization.

1638286214994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35798 (or 35792 counting only the distinct ones).

The product of its digits is 35831808, while the sum is 63.

The spelling of 1638286214994 in words is "one trillion, six hundred thirty-eight billion, two hundred eighty-six million, two hundred fourteen thousand, nine hundred ninety-four".