3970915493 has 2 divisors, whose sum is σ = 3970915494. Its totient is φ = 3970915492.

The previous prime is 3970915447. The next prime is 3970915513. The reversal of 3970915493 is 3945190793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3519692929 + 451222564 = 59327^2 + 21242^2 .

It is an emirp because it is prime and its reverse (3945190793) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3970915493 - 2¹⁴ = 3970899109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3970915423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1985457746 + 1985457747.

It is an arithmetic number, because the mean of its divisors is an integer number (1985457747).

Almost surely, 2^3970915493 is an apocalyptic number.

It is an amenable number.

3970915493 is a deficient number, since it is larger than the sum of its proper divisors (1).

3970915493 is an equidigital number, since it uses as much as digits as its factorization.

3970915493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 918540, while the sum is 50.

The square root of 3970915493 is about 63015.2004916274. The cubic root of 3970915493 is about 1583.5442910592.

The spelling of 3970915493 in words is "three billion, nine hundred seventy million, nine hundred fifteen thousand, four hundred ninety-three".