1820100422 has 8 divisors (see below), whose sum is σ = 3120172176. Its totient is φ = 780043032.

The previous prime is 1820100391. The next prime is 1820100433. The reversal of 1820100422 is 2240010281.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 1820100394 and 1820100403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65003573 + ... + 65003600.

It is an arithmetic number, because the mean of its divisors is an integer number (390021522).

Almost surely, 2^1820100422 is an apocalyptic number.

1820100422 is a deficient number, since it is larger than the sum of its proper divisors (1300071754).

1820100422 is a wasteful number, since it uses less digits than its factorization.

1820100422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130007182.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 1820100422 is about 42662.6349631619. The cubic root of 1820100422 is about 1220.9516050384.

The spelling of 1820100422 in words is "one billion, eight hundred twenty million, one hundred thousand, four hundred twenty-two".