3158634991 has 2 divisors, whose sum is σ = 3158634992. Its totient is φ = 3158634990.

The previous prime is 3158634949. The next prime is 3158635013. The reversal of 3158634991 is 1994368513.

It is a strong prime.

It is an emirp because it is prime and its reverse (1994368513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3158634991 - 2¹³ = 3158626799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3158634931) 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, 1579317495 + 1579317496.

It is an arithmetic number, because the mean of its divisors is an integer number (1579317496).

Almost surely, 2^3158634991 is an apocalyptic number.

3158634991 is a deficient number, since it is larger than the sum of its proper divisors (1).

3158634991 is an equidigital number, since it uses as much as digits as its factorization.

3158634991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 699840, while the sum is 49.

The square root of 3158634991 is about 56201.7347685994. The cubic root of 3158634991 is about 1467.2354586624.

The spelling of 3158634991 in words is "three billion, one hundred fifty-eight million, six hundred thirty-four thousand, nine hundred ninety-one".