1808964864 has 108 divisors (see below), whose sum is σ = 5960843616. Its totient is φ = 516842496.

The previous prime is 1808964853. The next prime is 1808964869. The reversal of 1808964864 is 4684698081.

1808964864 is a `hidden beast` number, since 1 + 80 + 89 + 6 + 486 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1808964864.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1808964869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39954 + ... + 72209.

Almost surely, 2^1808964864 is an apocalyptic number.

1808964864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1808964864 is an abundant number, since it is smaller than the sum of its proper divisors (4151878752).

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

1808964864 is a wasteful number, since it uses less digits than its factorization.

1808964864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112192 (or 112175 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 54.

The square root of 1808964864 is about 42531.9275838752. The cubic root of 1808964864 is about 1218.4565413842.

The spelling of 1808964864 in words is "one billion, eight hundred eight million, nine hundred sixty-four thousand, eight hundred sixty-four".