7900360981 has 2 divisors, whose sum is σ = 7900360982. Its totient is φ = 7900360980.

The previous prime is 7900360973. The next prime is 7900360991. The reversal of 7900360981 is 1890630097.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7887038481 + 13322500 = 88809^2 + 3650^2 .

It is a cyclic number.

It is not a de Polignac number, because 7900360981 - 2³ = 7900360973 is a prime.

It is a super-2 number, since 2×7900360981² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7900360961) 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, 3950180490 + 3950180491.

It is an arithmetic number, because the mean of its divisors is an integer number (3950180491).

Almost surely, 2^7900360981 is an apocalyptic number.

It is an amenable number.

7900360981 is a deficient number, since it is larger than the sum of its proper divisors (1).

7900360981 is an equidigital number, since it uses as much as digits as its factorization.

7900360981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 7900360981 is about 88883.9748267369. The cubic root of 7900360981 is about 1991.6620358997.

The spelling of 7900360981 in words is "seven billion, nine hundred million, three hundred sixty thousand, nine hundred eighty-one".