18786049699740 has 192 divisors, whose sum is σ = 54314556645888. Its totient is φ = 4848391475200.

The previous prime is 18786049699667. The next prime is 18786049699759. The reversal of 18786049699740 is 4799694068781.

It is a super-2 number, since 2×18786049699740² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1078595512 + ... + 1078612928.

It is an arithmetic number, because the mean of its divisors is an integer number (282888315864).

Almost surely, 2^{18786049699740} is an apocalyptic number.

18786049699740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18786049699740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27157278322944).

18786049699740 is an abundant number, since it is smaller than the sum of its proper divisors (35528506946148).

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

18786049699740 is a wasteful number, since it uses less digits than its factorization.

18786049699740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20948 (or 20946 counting only the distinct ones).

The product of its (nonzero) digits is 1316818944, while the sum is 78.

The spelling of 18786049699740 in words is "eighteen trillion, seven hundred eighty-six billion, forty-nine million, six hundred ninety-nine thousand, seven hundred forty".