1812898395 has 256 divisors, whose sum is σ = 4324147200. Its totient is φ = 697973760.

The previous prime is 1812898379. The next prime is 1812898397. The reversal of 1812898395 is 5938982181.

It is not a de Polignac number, because 1812898395 - 2⁴ = 1812898379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1812898397) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 13232767 + ... + 13232903.

It is an arithmetic number, because the mean of its divisors is an integer number (16891200).

Almost surely, 2^1812898395 is an apocalyptic number.

1812898395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1812898395 is an abundant number, since it is smaller than the sum of its proper divisors (2511248805).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1812898395 is a wasteful number, since it uses less digits than its factorization.

1812898395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255 (or 249 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 54.

The square root of 1812898395 is about 42578.1445697203. The cubic root of 1812898395 is about 1219.3390657700.

The spelling of 1812898395 in words is "one billion, eight hundred twelve million, eight hundred ninety-eight thousand, three hundred ninety-five".