3956091493 has 2 divisors, whose sum is σ = 3956091494. Its totient is φ = 3956091492.

The previous prime is 3956091481. The next prime is 3956091497. The reversal of 3956091493 is 3941906593.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3951756769 + 4334724 = 62863^2 + 2082^2 .

It is a cyclic number.

It is not a de Polignac number, because 3956091493 - 2¹³ = 3956083301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3956091497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1978045746 + 1978045747.

It is an arithmetic number, because the mean of its divisors is an integer number (1978045747).

Almost surely, 2^3956091493 is an apocalyptic number.

It is an amenable number.

3956091493 is a deficient number, since it is larger than the sum of its proper divisors (1).

3956091493 is an equidigital number, since it uses as much as digits as its factorization.

3956091493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 787320, while the sum is 49.

The square root of 3956091493 is about 62897.4680968956. The cubic root of 3956091493 is about 1581.5713008233.

The spelling of 3956091493 in words is "three billion, nine hundred fifty-six million, ninety-one thousand, four hundred ninety-three".