18429048349 has 2 divisors, whose sum is σ = 18429048350. Its totient is φ = 18429048348.

The previous prime is 18429048293. The next prime is 18429048389. The reversal of 18429048349 is 94384092481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18365128324 + 63920025 = 135518^2 + 7995^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18429048349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18429048296 and 18429048305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18429048389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9214524174 + 9214524175.

It is an arithmetic number, because the mean of its divisors is an integer number (9214524175).

Almost surely, 2^18429048349 is an apocalyptic number.

It is an amenable number.

18429048349 is a deficient number, since it is larger than the sum of its proper divisors (1).

18429048349 is an equidigital number, since it uses as much as digits as its factorization.

18429048349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1990656, while the sum is 52.

The spelling of 18429048349 in words is "eighteen billion, four hundred twenty-nine million, forty-eight thousand, three hundred forty-nine".