38818590013481 has 8 divisors (see below), whose sum is σ = 39303711275400. Its totient is φ = 38335444806400.

The previous prime is 38818590013459. The next prime is 38818590013523. The reversal of 38818590013481 is 18431009581883.

It can be written as a sum of positive squares in 4 ways, for example, as 17998670490256 + 20819919523225 = 4242484^2 + 4562885^2 .

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 38818590013481 - 2²² = 38818585819177 is a prime.

It is a super-2 number, since 2×38818590013481² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 38818590013481.

It is not an unprimeable number, because it can be changed into a prime (38818590010481) 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, 493974176 + ... + 494052753.

It is an arithmetic number, because the mean of its divisors is an integer number (4912963909425).

Almost surely, 2^{38818590013481} is an apocalyptic number.

It is an amenable number.

38818590013481 is a deficient number, since it is larger than the sum of its proper divisors (485121261919).

38818590013481 is a wasteful number, since it uses less digits than its factorization.

38818590013481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988027419.

The product of its (nonzero) digits is 6635520, while the sum is 59.

The spelling of 38818590013481 in words is "thirty-eight trillion, eight hundred eighteen billion, five hundred ninety million, thirteen thousand, four hundred eighty-one".