18476149129 has 2 divisors, whose sum is σ = 18476149130. Its totient is φ = 18476149128.

The previous prime is 18476149091. The next prime is 18476149187. The reversal of 18476149129 is 92194167481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10707489529 + 7768659600 = 103477^2 + 88140^2 .

It is a cyclic number.

It is not a de Polignac number, because 18476149129 - 2¹³ = 18476140937 is a prime.

It is not a weakly prime, because it can be changed into another prime (18476141129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9238074564 + 9238074565.

It is an arithmetic number, because the mean of its divisors is an integer number (9238074565).

Almost surely, 2^18476149129 is an apocalyptic number.

It is an amenable number.

18476149129 is a deficient number, since it is larger than the sum of its proper divisors (1).

18476149129 is an equidigital number, since it uses as much as digits as its factorization.

18476149129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 52.

The spelling of 18476149129 in words is "eighteen billion, four hundred seventy-six million, one hundred forty-nine thousand, one hundred twenty-nine".