188631484 has 12 divisors (see below), whose sum is σ = 331148664. Its totient is φ = 94017584.

The previous prime is 188631431. The next prime is 188631491. The reversal of 188631484 is 484136881.

It is a self number, because there is not a number n which added to its sum of digits gives 188631484.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73114 + ... + 75649.

It is an arithmetic number, because the mean of its divisors is an integer number (27595722).

Almost surely, 2^188631484 is an apocalyptic number.

It is an amenable number.

188631484 is a deficient number, since it is larger than the sum of its proper divisors (142517180).

188631484 is a wasteful number, since it uses less digits than its factorization.

188631484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149084 (or 149082 counting only the distinct ones).

The product of its digits is 147456, while the sum is 43.

The square root of 188631484 is about 13734.3177478898. The cubic root of 188631484 is about 573.5061249814.

The spelling of 188631484 in words is "one hundred eighty-eight million, six hundred thirty-one thousand, four hundred eighty-four".