3956420137 has 2 divisors, whose sum is σ = 3956420138. Its totient is φ = 3956420136.

The previous prime is 3956420113. The next prime is 3956420203. The reversal of 3956420137 is 7310246593.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2433547561 + 1522872576 = 49331^2 + 39024^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3956420137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3956420137.

It is not a weakly prime, because it can be changed into another prime (3956420437) 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, 1978210068 + 1978210069.

It is an arithmetic number, because the mean of its divisors is an integer number (1978210069).

Almost surely, 2^3956420137 is an apocalyptic number.

It is an amenable number.

3956420137 is a deficient number, since it is larger than the sum of its proper divisors (1).

3956420137 is an equidigital number, since it uses as much as digits as its factorization.

3956420137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 3956420137 is about 62900.0805802346. The cubic root of 3956420137 is about 1581.6150948497.

The spelling of 3956420137 in words is "three billion, nine hundred fifty-six million, four hundred twenty thousand, one hundred thirty-seven".