3993131537 has 2 divisors, whose sum is σ = 3993131538. Its totient is φ = 3993131536.

The previous prime is 3993131507. The next prime is 3993131543. The reversal of 3993131537 is 7351313993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3990322561 + 2808976 = 63169^2 + 1676^2 .

It is a cyclic number.

It is not a de Polignac number, because 3993131537 - 2⁸ = 3993131281 is a prime.

It is not a weakly prime, because it can be changed into another prime (3993131507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1996565768 + 1996565769.

It is an arithmetic number, because the mean of its divisors is an integer number (1996565769).

Almost surely, 2^3993131537 is an apocalyptic number.

It is an amenable number.

3993131537 is a deficient number, since it is larger than the sum of its proper divisors (1).

3993131537 is an equidigital number, since it uses as much as digits as its factorization.

3993131537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 229635, while the sum is 44.

The square root of 3993131537 is about 63191.2299057393. The cubic root of 3993131537 is about 1586.4919476411.

The spelling of 3993131537 in words is "three billion, nine hundred ninety-three million, one hundred thirty-one thousand, five hundred thirty-seven".