18471794019 has 16 divisors (see below), whose sum is σ = 28369133568. Its totient is φ = 10472196672.

The previous prime is 18471794009. The next prime is 18471794059. The reversal of 18471794019 is 91049717481.

It is not a de Polignac number, because 18471794019 - 2¹¹ = 18471791971 is a prime.

It is a super-3 number, since 3×18471794019³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (18471794009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3460362 + ... + 3465695.

It is an arithmetic number, because the mean of its divisors is an integer number (1773070848).

Almost surely, 2^18471794019 is an apocalyptic number.

18471794019 is a deficient number, since it is larger than the sum of its proper divisors (9897339549).

18471794019 is a wasteful number, since it uses less digits than its factorization.

18471794019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6926194.

The product of its (nonzero) digits is 508032, while the sum is 51.

The spelling of 18471794019 in words is "eighteen billion, four hundred seventy-one million, seven hundred ninety-four thousand, nineteen".