18854348146 has 4 divisors (see below), whose sum is σ = 28281522222. Its totient is φ = 9427174072.

The previous prime is 18854348137. The next prime is 18854348179. The reversal of 18854348146 is 64184345881.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18539817921 + 314530225 = 136161^2 + 17735^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18854348093 and 18854348102.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4713587035 + ... + 4713587038.

Almost surely, 2^18854348146 is an apocalyptic number.

18854348146 is a deficient number, since it is larger than the sum of its proper divisors (9427174076).

18854348146 is an equidigital number, since it uses as much as digits as its factorization.

18854348146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9427174075.

The product of its digits is 2949120, while the sum is 52.

The spelling of 18854348146 in words is "eighteen billion, eight hundred fifty-four million, three hundred forty-eight thousand, one hundred forty-six".