2238868181936 has 80 divisors (see below), whose sum is σ = 4501178572800. Its totient is φ = 1077659182080.

The previous prime is 2238868181923. The next prime is 2238868181981. The reversal of 2238868181936 is 6391818688322.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164024840 + ... + 164038488.

It is an arithmetic number, because the mean of its divisors is an integer number (56264732160).

Almost surely, 2^{2238868181936} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2238868181936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2250589286400).

2238868181936 is an abundant number, since it is smaller than the sum of its proper divisors (2262310390864).

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

2238868181936 is a wasteful number, since it uses less digits than its factorization.

2238868181936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15394 (or 15388 counting only the distinct ones).

The product of its digits is 47775744, while the sum is 65.

The spelling of 2238868181936 in words is "two trillion, two hundred thirty-eight billion, eight hundred sixty-eight million, one hundred eighty-one thousand, nine hundred thirty-six".