1808068687400 has 48 divisors (see below), whose sum is σ = 4243047222240. Its totient is φ = 716468331200.

The previous prime is 1808068687363. The next prime is 1808068687409. The reversal of 1808068687400 is 47868608081.

It is a super-2 number, since 2×1808068687400² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1808068687409) 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, 42223196 + ... + 42265995.

It is an arithmetic number, because the mean of its divisors is an integer number (88396817130).

Almost surely, 2^{1808068687400} is an apocalyptic number.

1808068687400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1808068687400 is an abundant number, since it is smaller than the sum of its proper divisors (2434978534840).

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

1808068687400 is a wasteful number, since it uses less digits than its factorization.

1808068687400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84489314 (or 84489305 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 56.

The spelling of 1808068687400 in words is "one trillion, eight hundred eight billion, sixty-eight million, six hundred eighty-seven thousand, four hundred".