18038161783 has 2 divisors, whose sum is σ = 18038161784. Its totient is φ = 18038161782.

The previous prime is 18038161777. The next prime is 18038161837. The reversal of 18038161783 is 38716183081.

Together with next prime (18038161837) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18038161783 - 2⁵ = 18038161751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18038161703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9019080891 + 9019080892.

It is an arithmetic number, because the mean of its divisors is an integer number (9019080892).

Almost surely, 2^18038161783 is an apocalyptic number.

18038161783 is a deficient number, since it is larger than the sum of its proper divisors (1).

18038161783 is an equidigital number, since it uses as much as digits as its factorization.

18038161783 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 46.

The spelling of 18038161783 in words is "eighteen billion, thirty-eight million, one hundred sixty-one thousand, seven hundred eighty-three".