18354765829 has 2 divisors, whose sum is σ = 18354765830. Its totient is φ = 18354765828.

The previous prime is 18354765797. The next prime is 18354765839. The reversal of 18354765829 is 92856745381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11387024100 + 6967741729 = 106710^2 + 83473^2 .

It is a cyclic number.

It is not a de Polignac number, because 18354765829 - 2⁵ = 18354765797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18354765839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9177382914 + 9177382915.

It is an arithmetic number, because the mean of its divisors is an integer number (9177382915).

Almost surely, 2^18354765829 is an apocalyptic number.

It is an amenable number.

18354765829 is a deficient number, since it is larger than the sum of its proper divisors (1).

18354765829 is an equidigital number, since it uses as much as digits as its factorization.

18354765829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14515200, while the sum is 58.

The spelling of 18354765829 in words is "eighteen billion, three hundred fifty-four million, seven hundred sixty-five thousand, eight hundred twenty-nine".