1122357779 has 4 divisors (see below), whose sum is σ = 1125748920. Its totient is φ = 1118966640.

The previous prime is 1122357773. The next prime is 1122357787. The reversal of 1122357779 is 9777532211.

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 1122357779 - 2⁴ = 1122357763 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1122357773) 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, 1695074 + ... + 1695735.

It is an arithmetic number, because the mean of its divisors is an integer number (281437230).

Almost surely, 2^1122357779 is an apocalyptic number.

1122357779 is a deficient number, since it is larger than the sum of its proper divisors (3391141).

1122357779 is an equidigital number, since it uses as much as digits as its factorization.

1122357779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3391140.

The product of its digits is 185220, while the sum is 44.

The square root of 1122357779 is about 33501.6086031701. The cubic root of 1122357779 is about 1039.2270449297.

The spelling of 1122357779 in words is "one billion, one hundred twenty-two million, three hundred fifty-seven thousand, seven hundred seventy-nine".