3980815613 has 2 divisors, whose sum is σ = 3980815614. Its totient is φ = 3980815612.

The previous prime is 3980815589. The next prime is 3980815649. The reversal of 3980815613 is 3165180893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2330668729 + 1650146884 = 48277^2 + 40622^2 .

It is a cyclic number.

It is not a de Polignac number, because 3980815613 - 2⁶ = 3980815549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3980815673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1990407806 + 1990407807.

It is an arithmetic number, because the mean of its divisors is an integer number (1990407807).

Almost surely, 2^3980815613 is an apocalyptic number.

It is an amenable number.

3980815613 is a deficient number, since it is larger than the sum of its proper divisors (1).

3980815613 is an equidigital number, since it uses as much as digits as its factorization.

3980815613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 3980815613 is about 63093.7050188052. The cubic root of 3980815613 is about 1584.8592076409.

The spelling of 3980815613 in words is "three billion, nine hundred eighty million, eight hundred fifteen thousand, six hundred thirteen".