1181226722 has 8 divisors (see below), whose sum is σ = 1908135516. Its totient is φ = 545181552.

The previous prime is 1181226721. The next prime is 1181226731. The reversal of 1181226722 is 2276221811.

It can be written as a sum of positive squares in 2 ways, for example, as 1160696761 + 20529961 = 34069^2 + 4531^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1181226721) 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, 22715873 + ... + 22715924.

Almost surely, 2^1181226722 is an apocalyptic number.

1181226722 is a deficient number, since it is larger than the sum of its proper divisors (726908794).

1181226722 is a wasteful number, since it uses less digits than its factorization.

1181226722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45431812.

The product of its digits is 5376, while the sum is 32.

The square root of 1181226722 is about 34368.9790654305. The cubic root of 1181226722 is about 1057.0878659749.

The spelling of 1181226722 in words is "one billion, one hundred eighty-one million, two hundred twenty-six thousand, seven hundred twenty-two".