189757856 has 12 divisors (see below), whose sum is σ = 373585842. Its totient is φ = 94878912.

The previous prime is 189757853. The next prime is 189757903. The reversal of 189757856 is 658757981.

It can be written as a sum of positive squares in only one way, i.e., 182682256 + 7075600 = 13516^2 + 2660^2 .

It is not an unprimeable number, because it can be changed into a prime (189757853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2964935 + ... + 2964998.

Almost surely, 2^189757856 is an apocalyptic number.

189757856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

189757856 is a deficient number, since it is larger than the sum of its proper divisors (183827986).

189757856 is an equidigital number, since it uses as much as digits as its factorization.

189757856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5929943 (or 5929935 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 56.

The square root of 189757856 is about 13775.2624657391. The cubic root of 189757856 is about 574.6453828558.

The spelling of 189757856 in words is "one hundred eighty-nine million, seven hundred fifty-seven thousand, eight hundred fifty-six".