1422765818 has 4 divisors (see below), whose sum is σ = 2134148730. Its totient is φ = 711382908.

The previous prime is 1422765797. The next prime is 1422765829. The reversal of 1422765818 is 8185672241.

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

It can be written as a sum of positive squares in only one way, i.e., 973876849 + 448888969 = 31207^2 + 21187^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355691453 + ... + 355691456.

Almost surely, 2^1422765818 is an apocalyptic number.

1422765818 is a deficient number, since it is larger than the sum of its proper divisors (711382912).

1422765818 is an equidigital number, since it uses as much as digits as its factorization.

1422765818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711382911.

The product of its digits is 215040, while the sum is 44.

The square root of 1422765818 is about 37719.5681046324. The cubic root of 1422765818 is about 1124.7201458298.

The spelling of 1422765818 in words is "one billion, four hundred twenty-two million, seven hundred sixty-five thousand, eight hundred eighteen".