1157171086 has 4 divisors (see below), whose sum is σ = 1735756632. Its totient is φ = 578585542.

The previous prime is 1157171083. The next prime is 1157171087. The reversal of 1157171086 is 6801717511.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157171083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 289292770 + ... + 289292773.

It is an arithmetic number, because the mean of its divisors is an integer number (433939158).

Almost surely, 2^1157171086 is an apocalyptic number.

1157171086 is a deficient number, since it is larger than the sum of its proper divisors (578585546).

1157171086 is an equidigital number, since it uses as much as digits as its factorization.

1157171086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578585545.

The product of its (nonzero) digits is 11760, while the sum is 37.

The square root of 1157171086 is about 34017.2174934988. The cubic root of 1157171086 is about 1049.8627442659.

Adding to 1157171086 its reverse (6801717511), we get a palindrome (7958888597).

The spelling of 1157171086 in words is "one billion, one hundred fifty-seven million, one hundred seventy-one thousand, eighty-six".