18898194266 has 24 divisors (see below), whose sum is σ = 33283620576. Its totient is φ = 8023527960.

The previous prime is 18898194223. The next prime is 18898194269. The reversal of 18898194266 is 66249189881.

It is a junction number, because it is equal to n+sod(n) for n = 18898194199 and 18898194208.

It is not an unprimeable number, because it can be changed into a prime (18898194269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 890630 + ... + 911601.

It is an arithmetic number, because the mean of its divisors is an integer number (1386817524).

Almost surely, 2^18898194266 is an apocalyptic number.

18898194266 is a deficient number, since it is larger than the sum of its proper divisors (14385426310).

18898194266 is a wasteful number, since it uses less digits than its factorization.

18898194266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1802354 (or 1802347 counting only the distinct ones).

The product of its digits is 11943936, while the sum is 62.

The spelling of 18898194266 in words is "eighteen billion, eight hundred ninety-eight million, one hundred ninety-four thousand, two hundred sixty-six".