38781607441 has 2 divisors, whose sum is σ = 38781607442. Its totient is φ = 38781607440.

The previous prime is 38781607379. The next prime is 38781607451. The reversal of 38781607441 is 14470618783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38683022400 + 98585041 = 196680^2 + 9929^2 .

It is an emirp because it is prime and its reverse (14470618783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38781607441 - 2¹⁹ = 38781083153 is a prime.

It is not a weakly prime, because it can be changed into another prime (38781607451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19390803720 + 19390803721.

It is an arithmetic number, because the mean of its divisors is an integer number (19390803721).

Almost surely, 2^38781607441 is an apocalyptic number.

It is an amenable number.

38781607441 is a deficient number, since it is larger than the sum of its proper divisors (1).

38781607441 is an equidigital number, since it uses as much as digits as its factorization.

38781607441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 903168, while the sum is 49.

The spelling of 38781607441 in words is "thirty-eight billion, seven hundred eighty-one million, six hundred seven thousand, four hundred forty-one".