18726004199 has 12 divisors (see below), whose sum is σ = 21881006784. Its totient is φ = 15978874464.

The previous prime is 18726004189. The next prime is 18726004201. The reversal of 18726004199 is 99140062781.

It is not a de Polignac number, because 18726004199 - 2⁴ = 18726004183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18726004109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 845942 + ... + 867795.

It is an arithmetic number, because the mean of its divisors is an integer number (1823417232).

Almost surely, 2^18726004199 is an apocalyptic number.

18726004199 is a deficient number, since it is larger than the sum of its proper divisors (3155002585).

18726004199 is a wasteful number, since it uses less digits than its factorization.

18726004199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1713974 (or 1713967 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 47.

The spelling of 18726004199 in words is "eighteen billion, seven hundred twenty-six million, four thousand, one hundred ninety-nine".