18739017038723 has 2 divisors, whose sum is σ = 18739017038724. Its totient is φ = 18739017038722.

The previous prime is 18739017038701. The next prime is 18739017038741. The reversal of 18739017038723 is 32783071093781.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18739017038723 - 2⁶ = 18739017038659 is a prime.

It is not a weakly prime, because it can be changed into another prime (18739017038783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9369508519361 + 9369508519362.

It is an arithmetic number, because the mean of its divisors is an integer number (9369508519362).

Almost surely, 2^{18739017038723} is an apocalyptic number.

18739017038723 is a deficient number, since it is larger than the sum of its proper divisors (1).

18739017038723 is an equidigital number, since it uses as much as digits as its factorization.

18739017038723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10668672, while the sum is 59.

The spelling of 18739017038723 in words is "eighteen trillion, seven hundred thirty-nine billion, seventeen million, thirty-eight thousand, seven hundred twenty-three".