1898813122 has 8 divisors (see below), whose sum is σ = 2856289356. Its totient is φ = 946716672.

The previous prime is 1898813099. The next prime is 1898813129. The reversal of 1898813122 is 2213188981.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1700820081 + 197993041 = 41241^2 + 14071^2 .

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 (1898813129) 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, 1344063 + ... + 1345474.

Almost surely, 2^1898813122 is an apocalyptic number.

1898813122 is a deficient number, since it is larger than the sum of its proper divisors (957476234).

1898813122 is a wasteful number, since it uses less digits than its factorization.

1898813122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2689892.

The product of its digits is 55296, while the sum is 43.

The square root of 1898813122 is about 43575.3728842336. The cubic root of 1898813122 is about 1238.3043772475.

The spelling of 1898813122 in words is "one billion, eight hundred ninety-eight million, eight hundred thirteen thousand, one hundred twenty-two".