1122179857 has 4 divisors (see below), whose sum is σ = 1129064560. Its totient is φ = 1115295156.

The previous prime is 1122179831. The next prime is 1122179887. The reversal of 1122179857 is 7589712211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1122179857 - 2¹⁹ = 1121655569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1122179827) 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 in 3 ways as a sum of consecutive naturals, for example, 3442107 + ... + 3442432.

It is an arithmetic number, because the mean of its divisors is an integer number (282266140).

Almost surely, 2^1122179857 is an apocalyptic number.

It is an amenable number.

1122179857 is a deficient number, since it is larger than the sum of its proper divisors (6884703).

1122179857 is an equidigital number, since it uses as much as digits as its factorization.

1122179857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6884702.

The product of its digits is 70560, while the sum is 43.

The square root of 1122179857 is about 33498.9530731932. The cubic root of 1122179857 is about 1039.1721274667.

The spelling of 1122179857 in words is "one billion, one hundred twenty-two million, one hundred seventy-nine thousand, eight hundred fifty-seven".