38830748981 has 2 divisors, whose sum is σ = 38830748982. Its totient is φ = 38830748980.

The previous prime is 38830748953. The next prime is 38830748987. The reversal of 38830748981 is 18984703883.

38830748981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38194448356 + 636300625 = 195434^2 + 25225^2 .

It is an emirp because it is prime and its reverse (18984703883) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38830748981 - 2¹⁰ = 38830747957 is a prime.

It is a super-2 number, since 2×38830748981² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 38830748981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38830748987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19415374490 + 19415374491.

It is an arithmetic number, because the mean of its divisors is an integer number (19415374491).

Almost surely, 2^38830748981 is an apocalyptic number.

It is an amenable number.

38830748981 is a deficient number, since it is larger than the sum of its proper divisors (1).

38830748981 is an equidigital number, since it uses as much as digits as its factorization.

38830748981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9289728, while the sum is 59.

The spelling of 38830748981 in words is "thirty-eight billion, eight hundred thirty million, seven hundred forty-eight thousand, nine hundred eighty-one".