18429048257 has 4 divisors (see below), whose sum is σ = 18432799680. Its totient is φ = 18425296836.

The previous prime is 18429048251. The next prime is 18429048293. The reversal of 18429048257 is 75284092481.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18429048257 - 2⁶ = 18429048193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18429048251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1868333 + ... + 1878170.

It is an arithmetic number, because the mean of its divisors is an integer number (4608199920).

Almost surely, 2^18429048257 is an apocalyptic number.

It is an amenable number.

18429048257 is a deficient number, since it is larger than the sum of its proper divisors (3751423).

18429048257 is an equidigital number, since it uses as much as digits as its factorization.

18429048257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3751422.

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 18429048257 in words is "eighteen billion, four hundred twenty-nine million, forty-eight thousand, two hundred fifty-seven".