1420326818 has 4 divisors (see below), whose sum is σ = 2130490230. Its totient is φ = 710163408.

The previous prime is 1420326811. The next prime is 1420326821. The reversal of 1420326818 is 8186230241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8186230241 = 7 ⋅1169461463.

It can be written as a sum of positive squares in only one way, i.e., 766348489 + 653978329 = 27683^2 + 25573^2 .

It is not an unprimeable number, because it can be changed into a prime (1420326811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355081703 + ... + 355081706.

Almost surely, 2^1420326818 is an apocalyptic number.

1420326818 is a deficient number, since it is larger than the sum of its proper divisors (710163412).

1420326818 is an equidigital number, since it uses as much as digits as its factorization.

1420326818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710163411.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 1420326818 is about 37687.2235379578. The cubic root of 1420326818 is about 1124.0770881514.

The spelling of 1420326818 in words is "one billion, four hundred twenty million, three hundred twenty-six thousand, eight hundred eighteen".