6946862981 has 2 divisors, whose sum is σ = 6946862982. Its totient is φ = 6946862980.

The previous prime is 6946862969. The next prime is 6946862987. The reversal of 6946862981 is 1892686496.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4539390625 + 2407472356 = 67375^2 + 49066^2 .

It is a cyclic number.

It is not a de Polignac number, because 6946862981 - 2⁶ = 6946862917 is a prime.

It is a super-2 number, since 2×6946862981² = 96517810553576412722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6946862981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6946862987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3473431490 + 3473431491.

It is an arithmetic number, because the mean of its divisors is an integer number (3473431491).

Almost surely, 2^6946862981 is an apocalyptic number.

It is an amenable number.

6946862981 is a deficient number, since it is larger than the sum of its proper divisors (1).

6946862981 is an equidigital number, since it uses as much as digits as its factorization.

6946862981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8957952, while the sum is 59.

The square root of 6946862981 is about 83347.8432894337. The cubic root of 6946862981 is about 1908.0785278746.

The spelling of 6946862981 in words is "six billion, nine hundred forty-six million, eight hundred sixty-two thousand, nine hundred eighty-one".