1808212368 has 80 divisors (see below), whose sum is σ = 4943026880. Its totient is φ = 568000512.

The previous prime is 1808212339. The next prime is 1808212391. The reversal of 1808212368 is 8632128081.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170880 + ... + 181152.

It is an arithmetic number, because the mean of its divisors is an integer number (61787836).

Almost surely, 2^1808212368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1808212368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2471513440).

1808212368 is an abundant number, since it is smaller than the sum of its proper divisors (3134814512).

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

1808212368 is a wasteful number, since it uses less digits than its factorization.

1808212368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10496 (or 10490 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 1808212368 is about 42523.0804152286. The cubic root of 1808212368 is about 1218.2875661401.

The spelling of 1808212368 in words is "one billion, eight hundred eight million, two hundred twelve thousand, three hundred sixty-eight".