2238874043918 has 16 divisors (see below), whose sum is σ = 3440271003120. Its totient is φ = 1092117835200.

The previous prime is 2238874043911. The next prime is 2238874043929. The reversal of 2238874043918 is 8193404788322.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2238874043911) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7132973 + ... + 7440231.

It is an arithmetic number, because the mean of its divisors is an integer number (215016937695).

Almost surely, 2^{2238874043918} is an apocalyptic number.

2238874043918 is a deficient number, since it is larger than the sum of its proper divisors (1201396959202).

2238874043918 is a wasteful number, since it uses less digits than its factorization.

2238874043918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396163.

The product of its (nonzero) digits is 18579456, while the sum is 59.

The spelling of 2238874043918 in words is "two trillion, two hundred thirty-eight billion, eight hundred seventy-four million, forty-three thousand, nine hundred eighteen".