1868898213 has 96 divisors (see below), whose sum is σ = 3538080000. Its totient is φ = 922503168.

The previous prime is 1868898211. The next prime is 1868898233. The reversal of 1868898213 is 3128988681.

It is not a de Polignac number, because 1868898213 - 2¹ = 1868898211 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1868898213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1868898211) by changing a digit.

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 in 95 ways as a sum of consecutive naturals, for example, 3745038 + ... + 3745536.

It is an arithmetic number, because the mean of its divisors is an integer number (36855000).

Almost surely, 2^1868898213 is an apocalyptic number.

1868898213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1868898213 is a deficient number, since it is larger than the sum of its proper divisors (1669181787).

1868898213 is a wasteful number, since it uses less digits than its factorization.

1868898213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811 (or 808 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 54.

The square root of 1868898213 is about 43230.7554063077. The cubic root of 1868898213 is about 1231.7669567939.

The spelling of 1868898213 in words is "one billion, eight hundred sixty-eight million, eight hundred ninety-eight thousand, two hundred thirteen".