18074821700 has 36 divisors (see below), whose sum is σ = 42239470980. Its totient is φ = 6673779840.

The previous prime is 18074821673. The next prime is 18074821711. The reversal of 18074821700 is 712847081.

It can be written as a sum of positive squares in 6 ways, for example, as 1176901636 + 16897920064 = 34306^2 + 129992^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6950555 + ... + 6953154.

Almost surely, 2^18074821700 is an apocalyptic number.

18074821700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18074821700 is an abundant number, since it is smaller than the sum of its proper divisors (24164649280).

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

18074821700 is a wasteful number, since it uses less digits than its factorization.

18074821700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13903736 (or 13903729 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 38.

The spelling of 18074821700 in words is "eighteen billion, seventy-four million, eight hundred twenty-one thousand, seven hundred".