38890367977 has 2 divisors, whose sum is σ = 38890367978. Its totient is φ = 38890367976.

The previous prime is 38890367947. The next prime is 38890368007. The reversal of 38890367977 is 77976309883.

It is a balanced prime because it is at equal distance from previous prime (38890367947) and next prime (38890368007).

It can be written as a sum of positive squares in only one way, i.e., 19720304041 + 19170063936 = 140429^2 + 138456^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38890367977 is a prime.

It is not a weakly prime, because it can be changed into another prime (38890367927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19445183988 + 19445183989.

It is an arithmetic number, because the mean of its divisors is an integer number (19445183989).

Almost surely, 2^38890367977 is an apocalyptic number.

It is an amenable number.

38890367977 is a deficient number, since it is larger than the sum of its proper divisors (1).

38890367977 is an equidigital number, since it uses as much as digits as its factorization.

38890367977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96018048, while the sum is 67.

The spelling of 38890367977 in words is "thirty-eight billion, eight hundred ninety million, three hundred sixty-seven thousand, nine hundred seventy-seven".