18054728429 has 2 divisors, whose sum is σ = 18054728430. Its totient is φ = 18054728428.

The previous prime is 18054728401. The next prime is 18054728449. The reversal of 18054728429 is 92482745081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17964040900 + 90687529 = 134030^2 + 9523^2 .

It is a cyclic number.

It is not a de Polignac number, because 18054728429 - 2⁸ = 18054728173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18054728449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9027364214 + 9027364215.

It is an arithmetic number, because the mean of its divisors is an integer number (9027364215).

Almost surely, 2^18054728429 is an apocalyptic number.

It is an amenable number.

18054728429 is a deficient number, since it is larger than the sum of its proper divisors (1).

18054728429 is an equidigital number, since it uses as much as digits as its factorization.

18054728429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 18054728429 in words is "eighteen billion, fifty-four million, seven hundred twenty-eight thousand, four hundred twenty-nine".