2238874043789 has 2 divisors, whose sum is σ = 2238874043790. Its totient is φ = 2238874043788.

The previous prime is 2238874043743. The next prime is 2238874043831. The reversal of 2238874043789 is 9873404788322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2084529564100 + 154344479689 = 1443790^2 + 392867^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2238874043789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2238874043719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1119437021894 + 1119437021895.

It is an arithmetic number, because the mean of its divisors is an integer number (1119437021895).

Almost surely, 2^{2238874043789} is an apocalyptic number.

It is an amenable number.

2238874043789 is a deficient number, since it is larger than the sum of its proper divisors (1).

2238874043789 is an equidigital number, since it uses as much as digits as its factorization.

2238874043789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 130056192, while the sum is 65.

The spelling of 2238874043789 in words is "two trillion, two hundred thirty-eight billion, eight hundred seventy-four million, forty-three thousand, seven hundred eighty-nine".