3681940979 has 2 divisors, whose sum is σ = 3681940980. Its totient is φ = 3681940978.

The previous prime is 3681940967. The next prime is 3681941057. The reversal of 3681940979 is 9790491863.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3681940979 - 2²⁰ = 3680892403 is a prime.

It is not a weakly prime, because it can be changed into another prime (3681940909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1840970489 + 1840970490.

It is an arithmetic number, because the mean of its divisors is an integer number (1840970490).

Almost surely, 2^3681940979 is an apocalyptic number.

3681940979 is a deficient number, since it is larger than the sum of its proper divisors (1).

3681940979 is an equidigital number, since it uses as much as digits as its factorization.

3681940979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2939328, while the sum is 56.

The square root of 3681940979 is about 60678.9994891148. Note that the first 3 decimals coincide. The cubic root of 3681940979 is about 1544.1599143243.

The spelling of 3681940979 in words is "three billion, six hundred eighty-one million, nine hundred forty thousand, nine hundred seventy-nine".