38980681 has 2 divisors, whose sum is σ = 38980682. Its totient is φ = 38980680.

The previous prime is 38980637. The next prime is 38980687. The reversal of 38980681 is 18608983.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21206025 + 17774656 = 4605^2 + 4216^2 .

It is an emirp because it is prime and its reverse (18608983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38980681 - 2⁹ = 38980169 is a prime.

It is a super-2 number, since 2×38980681² = 3038986982447522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38980687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19490340 + 19490341.

It is an arithmetic number, because the mean of its divisors is an integer number (19490341).

Almost surely, 2^38980681 is an apocalyptic number.

It is an amenable number.

38980681 is a deficient number, since it is larger than the sum of its proper divisors (1).

38980681 is an equidigital number, since it uses as much as digits as its factorization.

38980681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 38980681 is about 6243.4510488992. The cubic root of 38980681 is about 339.0651394855.

The spelling of 38980681 in words is "thirty-eight million, nine hundred eighty thousand, six hundred eighty-one".