18758358473 has 2 divisors, whose sum is σ = 18758358474. Its totient is φ = 18758358472.

The previous prime is 18758358439. The next prime is 18758358481. The reversal of 18758358473 is 37485385781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9489097744 + 9269260729 = 97412^2 + 96277^2 .

It is a cyclic number.

It is not a de Polignac number, because 18758358473 - 2¹⁶ = 18758292937 is a prime.

It is not a weakly prime, because it can be changed into another prime (18758358673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9379179236 + 9379179237.

It is an arithmetic number, because the mean of its divisors is an integer number (9379179237).

Almost surely, 2^18758358473 is an apocalyptic number.

It is an amenable number.

18758358473 is a deficient number, since it is larger than the sum of its proper divisors (1).

18758358473 is an equidigital number, since it uses as much as digits as its factorization.

18758358473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22579200, while the sum is 59.

The spelling of 18758358473 in words is "eighteen billion, seven hundred fifty-eight million, three hundred fifty-eight thousand, four hundred seventy-three".