188020534 has 8 divisors (see below), whose sum is σ = 303725520. Its totient is φ = 86778696.

The previous prime is 188020477. The next prime is 188020537. The reversal of 188020534 is 435020881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 188020496 and 188020505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188020537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3615754 + ... + 3615805.

It is an arithmetic number, because the mean of its divisors is an integer number (37965690).

Almost surely, 2^188020534 is an apocalyptic number.

188020534 is a deficient number, since it is larger than the sum of its proper divisors (115704986).

188020534 is a wasteful number, since it uses less digits than its factorization.

188020534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7231574.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 188020534 is about 13712.0579782905. The cubic root of 188020534 is about 572.8862876098.

The spelling of 188020534 in words is "one hundred eighty-eight million, twenty thousand, five hundred thirty-four".