7158591157 has 4 divisors (see below), whose sum is σ = 7160679820. Its totient is φ = 7156502496.

The previous prime is 7158591151. The next prime is 7158591199. The reversal of 7158591157 is 7511958517.

7158591157 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2068339441 + 5090251716 = 45479^2 + 71346^2 .

It is a cyclic number.

It is not a de Polignac number, because 7158591157 - 2⁷ = 7158591029 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7158591157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7158591151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1039182 + ... + 1046047.

It is an arithmetic number, because the mean of its divisors is an integer number (1790169955).

Almost surely, 2^7158591157 is an apocalyptic number.

It is an amenable number.

7158591157 is a deficient number, since it is larger than the sum of its proper divisors (2088663).

7158591157 is a wasteful number, since it uses less digits than its factorization.

7158591157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2088662.

The product of its digits is 441000, while the sum is 49.

The square root of 7158591157 is about 84608.4579519093. The cubic root of 7158591157 is about 1927.2698165732.

The spelling of 7158591157 in words is "seven billion, one hundred fifty-eight million, five hundred ninety-one thousand, one hundred fifty-seven".