3993819094537 has 2 divisors, whose sum is σ = 3993819094538. Its totient is φ = 3993819094536.

The previous prime is 3993819094483. The next prime is 3993819094549. The reversal of 3993819094537 is 7354909183993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3985149808656 + 8669285881 = 1996284^2 + 93109^2 .

It is a cyclic number.

It is not a de Polignac number, because 3993819094537 - 2²⁷ = 3993684876809 is a prime.

It is not a weakly prime, because it can be changed into another prime (3993819094037) 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, 1996909547268 + 1996909547269.

It is an arithmetic number, because the mean of its divisors is an integer number (1996909547269).

Almost surely, 2^{3993819094537} is an apocalyptic number.

It is an amenable number.

3993819094537 is a deficient number, since it is larger than the sum of its proper divisors (1).

3993819094537 is an equidigital number, since it uses as much as digits as its factorization.

3993819094537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 198404640, while the sum is 70.

The spelling of 3993819094537 in words is "three trillion, nine hundred ninety-three billion, eight hundred nineteen million, ninety-four thousand, five hundred thirty-seven".