1938906 has 12 divisors (see below), whose sum is σ = 4201002. Its totient is φ = 646296.

The previous prime is 1938889. The next prime is 1938907. The reversal of 1938906 is 6098391.

It can be written as a sum of positive squares in only one way, i.e., 1798281 + 140625 = 1341^2 + 375^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1938907) 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, 53841 + ... + 53876.

2^1938906 is an apocalyptic number.

1938906 is an abundant number, since it is smaller than the sum of its proper divisors (2262096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1938906 is a wasteful number, since it uses less digits than its factorization.

1938906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107725 (or 107722 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 1938906 is about 1392.4460492242. The cubic root of 1938906 is about 124.6959222268.

The spelling of 1938906 in words is "one million, nine hundred thirty-eight thousand, nine hundred six".