22018338437 has 2 divisors, whose sum is σ = 22018338438. Its totient is φ = 22018338436.

The previous prime is 22018338413. The next prime is 22018338457. The reversal of 22018338437 is 73483381022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19820697796 + 2197640641 = 140786^2 + 46879^2 .

It is a cyclic number.

It is not a de Polignac number, because 22018338437 - 2⁶ = 22018338373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22018338394 and 22018338403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22018338457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11009169218 + 11009169219.

It is an arithmetic number, because the mean of its divisors is an integer number (11009169219).

Almost surely, 2^22018338437 is an apocalyptic number.

It is an amenable number.

22018338437 is a deficient number, since it is larger than the sum of its proper divisors (1).

22018338437 is an equidigital number, since it uses as much as digits as its factorization.

22018338437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 41.

The spelling of 22018338437 in words is "twenty-two billion, eighteen million, three hundred thirty-eight thousand, four hundred thirty-seven".