7158429991 has 4 divisors (see below), whose sum is σ = 7198421400. Its totient is φ = 7118438584.

The previous prime is 7158429983. The next prime is 7158430051. The reversal of 7158429991 is 1999248517.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7158429991 - 2³ = 7158429983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7158429961) 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 in 3 ways as a sum of consecutive naturals, for example, 19995436 + ... + 19995793.

It is an arithmetic number, because the mean of its divisors is an integer number (1799605350).

Almost surely, 2^7158429991 is an apocalyptic number.

7158429991 is a deficient number, since it is larger than the sum of its proper divisors (39991409).

7158429991 is a wasteful number, since it uses less digits than its factorization.

7158429991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39991408.

The product of its digits is 1632960, while the sum is 55.

The square root of 7158429991 is about 84607.5055240373. The cubic root of 7158429991 is about 1927.2553531734.

The spelling of 7158429991 in words is "seven billion, one hundred fifty-eight million, four hundred twenty-nine thousand, nine hundred ninety-one".