188000100 has 54 divisors (see below), whose sum is σ = 589278690. Its totient is φ = 50133120.

The previous prime is 188000077. The next prime is 188000143. The reversal of 188000100 is 1000881.

It is a happy number.

188000100 is digitally balanced in base 2, base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 2005056 + 185995044 = 1416^2 + 13638^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

188000100 is strictly pandigital in base 9.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 103545 + ... + 105344.

Almost surely, 2^188000100 is an apocalyptic number.

188000100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

188000100 is an abundant number, since it is smaller than the sum of its proper divisors (401278590).

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

188000100 is a wasteful number, since it uses less digits than its factorization.

188000100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208909 (or 208899 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The square root of 188000100 is about 13711.3128474264. The cubic root of 188000100 is about 572.8655331701.

Adding to 188000100 its reverse (1000881), we get a palindrome (189000981).

The spelling of 188000100 in words is "one hundred eighty-eight million, one hundred", and thus it is an aban number.