38980207961 has 2 divisors, whose sum is σ = 38980207962. Its totient is φ = 38980207960.

The previous prime is 38980207949. The next prime is 38980207979. The reversal of 38980207961 is 16970208983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27903697936 + 11076510025 = 167044^2 + 105245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38980207961 is a prime.

It is a super-2 number, since 2×38980207961² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38980207561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19490103980 + 19490103981.

It is an arithmetic number, because the mean of its divisors is an integer number (19490103981).

Almost surely, 2^38980207961 is an apocalyptic number.

It is an amenable number.

38980207961 is a deficient number, since it is larger than the sum of its proper divisors (1).

38980207961 is an equidigital number, since it uses as much as digits as its factorization.

38980207961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The spelling of 38980207961 in words is "thirty-eight billion, nine hundred eighty million, two hundred seven thousand, nine hundred sixty-one".