18678473190 has 288 divisors, whose sum is σ = 55497312000. Its totient is φ = 4348041984.

The previous prime is 18678473179. The next prime is 18678473239. The reversal of 18678473190 is 9137487681.

18678473190 is a `hidden beast` number, since 1 + 86 + 7 + 8 + 473 + 1 + 90 = 666.

It is a super-2 number, since 2×18678473190² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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 in 143 ways as a sum of consecutive naturals, for example, 37431561 + ... + 37432059.

It is an arithmetic number, because the mean of its divisors is an integer number (192699000).

Almost surely, 2^18678473190 is an apocalyptic number.

18678473190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18678473190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27748656000).

18678473190 is an abundant number, since it is smaller than the sum of its proper divisors (36818838810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18678473190 is a wasteful number, since it uses less digits than its factorization.

18678473190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668 (or 652 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The spelling of 18678473190 in words is "eighteen billion, six hundred seventy-eight million, four hundred seventy-three thousand, one hundred ninety".