18374999029 has 2 divisors, whose sum is σ = 18374999030. Its totient is φ = 18374999028.

The previous prime is 18374999021. The next prime is 18374999059. The reversal of 18374999029 is 92099947381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18066048100 + 308950929 = 134410^2 + 17577^2 .

It is a cyclic number.

It is not a de Polignac number, because 18374999029 - 2³ = 18374999021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18374999021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9187499514 + 9187499515.

It is an arithmetic number, because the mean of its divisors is an integer number (9187499515).

Almost surely, 2^18374999029 is an apocalyptic number.

It is an amenable number.

18374999029 is a deficient number, since it is larger than the sum of its proper divisors (1).

18374999029 is an equidigital number, since it uses as much as digits as its factorization.

18374999029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8817984, while the sum is 61.

The spelling of 18374999029 in words is "eighteen billion, three hundred seventy-four million, nine hundred ninety-nine thousand, twenty-nine".