188841812 has 6 divisors (see below), whose sum is σ = 330473178. Its totient is φ = 94420904.

The previous prime is 188841811. The next prime is 188841827. The reversal of 188841812 is 218148881.

It can be written as a sum of positive squares in only one way, i.e., 122190916 + 66650896 = 11054^2 + 8164^2 .

It is a super-2 number, since 2×188841812² = 71322459918886688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 188841812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188841811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23605223 + ... + 23605230.

It is an arithmetic number, because the mean of its divisors is an integer number (55078863).

Almost surely, 2^188841812 is an apocalyptic number.

It is an amenable number.

188841812 is a deficient number, since it is larger than the sum of its proper divisors (141631366).

188841812 is a wasteful number, since it uses less digits than its factorization.

188841812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47210457 (or 47210455 counting only the distinct ones).

The product of its digits is 32768, while the sum is 41.

The square root of 188841812 is about 13741.9726385989. The cubic root of 188841812 is about 573.7192028631.

The spelling of 188841812 in words is "one hundred eighty-eight million, eight hundred forty-one thousand, eight hundred twelve".