18976913949870 has 384 divisors, whose sum is σ = 54141386256000. Its totient is φ = 4787671504896.

The previous prime is 18976913949869. The next prime is 18976913949901. The reversal of 18976913949870 is 7894931967981.

18976913949870 is a `hidden beast` number, since 1 + 8 + 9 + 7 + 6 + 91 + 39 + 498 + 7 + 0 = 666.

18976913949870 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a self number, because there is not a number n which added to its sum of digits gives 18976913949870.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 8913532966 + ... + 8913535094.

It is an arithmetic number, because the mean of its divisors is an integer number (140993193375).

Almost surely, 2^{18976913949870} is an apocalyptic number.

18976913949870 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 18976913949870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27070693128000).

18976913949870 is an abundant number, since it is smaller than the sum of its proper divisors (35164472306130).

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

18976913949870 is a wasteful number, since it uses less digits than its factorization.

18976913949870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3324 (or 3287 counting only the distinct ones).

The product of its (nonzero) digits is 1481421312, while the sum is 81.

The spelling of 18976913949870 in words is "eighteen trillion, nine hundred seventy-six billion, nine hundred thirteen million, nine hundred forty-nine thousand, eight hundred seventy".