189936850 has 12 divisors (see below), whose sum is σ = 353282634. Its totient is φ = 75974720.

The previous prime is 189936847. The next prime is 189936853. The reversal of 189936850 is 58639981.

It is an interprime number because it is at equal distance from previous prime (189936847) and next prime (189936853).

It can be written as a sum of positive squares in 3 ways, for example, as 129982801 + 59954049 = 11401^2 + 7743^2 .

It is a junction number, because it is equal to n+sod(n) for n = 189936794 and 189936803.

It is not an unprimeable number, because it can be changed into a prime (189936853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1899319 + ... + 1899418.

Almost surely, 2^189936850 is an apocalyptic number.

189936850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189936850 is a deficient number, since it is larger than the sum of its proper divisors (163345784).

189936850 is a wasteful number, since it uses less digits than its factorization.

189936850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3798749 (or 3798744 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 49.

The square root of 189936850 is about 13781.7578704605. The cubic root of 189936850 is about 574.8260091086.

The spelling of 189936850 in words is "one hundred eighty-nine million, nine hundred thirty-six thousand, eight hundred fifty".