381658178196 has 18 divisors (see below), whose sum is σ = 964747061642. Its totient is φ = 127219392720.

The previous prime is 381658178191. The next prime is 381658178197. The reversal of 381658178196 is 691871856183.

381658178196 is a `hidden beast` number, since 38 + 1 + 6 + 581 + 7 + 8 + 19 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 358238160900 + 23420017296 = 598530^2 + 153036^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381658178191) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5300807995 + ... + 5300808066.

Almost surely, 2^381658178196 is an apocalyptic number.

381658178196 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

381658178196 is an abundant number, since it is smaller than the sum of its proper divisors (583088883446).

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

381658178196 is a wasteful number, since it uses less digits than its factorization.

381658178196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10601616071 (or 10601616066 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 63.

The spelling of 381658178196 in words is "three hundred eighty-one billion, six hundred fifty-eight million, one hundred seventy-eight thousand, one hundred ninety-six".