38387753318181 has 8 divisors (see below), whose sum is σ = 51185260133280. Its totient is φ = 25591041024272.

The previous prime is 38387753318107. The next prime is 38387753318249. The reversal of 38387753318181 is 18181335778383.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38387753318181 - 2²⁹ = 38387216447269 is a prime.

It is a super-2 number, since 2×38387753318181² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38387753318081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198517551 + ... + 198710828.

It is an arithmetic number, because the mean of its divisors is an integer number (6398157516660).

Almost surely, 2^{38387753318181} is an apocalyptic number.

It is an amenable number.

38387753318181 is a deficient number, since it is larger than the sum of its proper divisors (12797506815099).

38387753318181 is a wasteful number, since it uses less digits than its factorization.

38387753318181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397260595.

The product of its digits is 81285120, while the sum is 66.

The spelling of 38387753318181 in words is "thirty-eight trillion, three hundred eighty-seven billion, seven hundred fifty-three million, three hundred eighteen thousand, one hundred eighty-one".