188348057 has 4 divisors (see below), whose sum is σ = 189388836. Its totient is φ = 187307280.

The previous prime is 188348051. The next prime is 188348059. The reversal of 188348057 is 750843881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 750843881 = 19 ⋅39518099.

It can be written as a sum of positive squares in 2 ways, for example, as 72914521 + 115433536 = 8539^2 + 10744^2 .

It is a cyclic number.

It is not a de Polignac number, because 188348057 - 2⁶ = 188347993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 188347999 and 188348017.

It is not an unprimeable number, because it can be changed into a prime (188348051) 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, 520118 + ... + 520479.

It is an arithmetic number, because the mean of its divisors is an integer number (47347209).

Almost surely, 2^188348057 is an apocalyptic number.

It is an amenable number.

188348057 is a deficient number, since it is larger than the sum of its proper divisors (1040779).

188348057 is a wasteful number, since it uses less digits than its factorization.

188348057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040778.

The product of its (nonzero) digits is 215040, while the sum is 44.

The square root of 188348057 is about 13723.9956645286. The cubic root of 188348057 is about 573.2187417082.

The spelling of 188348057 in words is "one hundred eighty-eight million, three hundred forty-eight thousand, fifty-seven".