6981513401 has 2 divisors, whose sum is σ = 6981513402. Its totient is φ = 6981513400.

The previous prime is 6981513397. The next prime is 6981513439. The reversal of 6981513401 is 1043151896.

It is an a-pointer prime, because the next prime (6981513439) can be obtained adding 6981513401 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6926234176 + 55279225 = 83224^2 + 7435^2 .

It is a cyclic number.

It is not a de Polignac number, because 6981513401 - 2² = 6981513397 is a prime.

It is not a weakly prime, because it can be changed into another prime (6981513001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3490756700 + 3490756701.

It is an arithmetic number, because the mean of its divisors is an integer number (3490756701).

Almost surely, 2^6981513401 is an apocalyptic number.

It is an amenable number.

6981513401 is a deficient number, since it is larger than the sum of its proper divisors (1).

6981513401 is an equidigital number, since it uses as much as digits as its factorization.

6981513401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 6981513401 is about 83555.4510549731. The cubic root of 6981513401 is about 1911.2457176048.

The spelling of 6981513401 in words is "six billion, nine hundred eighty-one million, five hundred thirteen thousand, four hundred one".