18152383121 has 2 divisors, whose sum is σ = 18152383122. Its totient is φ = 18152383120.

The previous prime is 18152383061. The next prime is 18152383141. The reversal of 18152383121 is 12138325181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16993729600 + 1158653521 = 130360^2 + 34039^2 .

It is a cyclic number.

It is not a de Polignac number, because 18152383121 - 2¹⁰ = 18152382097 is a prime.

It is not a weakly prime, because it can be changed into another prime (18152383141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9076191560 + 9076191561.

It is an arithmetic number, because the mean of its divisors is an integer number (9076191561).

Almost surely, 2^18152383121 is an apocalyptic number.

It is an amenable number.

18152383121 is a deficient number, since it is larger than the sum of its proper divisors (1).

18152383121 is an equidigital number, since it uses as much as digits as its factorization.

18152383121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 35.

The spelling of 18152383121 in words is "eighteen billion, one hundred fifty-two million, three hundred eighty-three thousand, one hundred twenty-one".