18460400299 has 4 divisors (see below), whose sum is σ = 20138618520. Its totient is φ = 16782182080.

The previous prime is 18460400251. The next prime is 18460400303. The reversal of 18460400299 is 99200406481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99200406481 = 11 ⋅9018218771.

It is a cyclic number.

It is not a de Polignac number, because 18460400299 - 2⁹ = 18460399787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18460401299) 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, 839109094 + ... + 839109115.

It is an arithmetic number, because the mean of its divisors is an integer number (5034654630).

Almost surely, 2^18460400299 is an apocalyptic number.

18460400299 is a deficient number, since it is larger than the sum of its proper divisors (1678218221).

18460400299 is a wasteful number, since it uses less digits than its factorization.

18460400299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1678218220.

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 18460400299 in words is "eighteen billion, four hundred sixty million, four hundred thousand, two hundred ninety-nine".