1938907 has 2 divisors, whose sum is σ = 1938908. Its totient is φ = 1938906.

The previous prime is 1938889. The next prime is 1938949. The reversal of 1938907 is 7098391.

It is a weak prime.

It is an emirp because it is prime and its reverse (7098391) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1938907 - 2¹¹ = 1936859 is a prime.

It is not a weakly prime, because it can be changed into another prime (1938977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 969453 + 969454.

It is an arithmetic number, because the mean of its divisors is an integer number (969454).

2^1938907 is an apocalyptic number.

1938907 is a deficient number, since it is larger than the sum of its proper divisors (1).

1938907 is an equidigital number, since it uses as much as digits as its factorization.

1938907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 1938907 is about 1392.4464083045. The cubic root of 1938907 is about 124.6959436643.

The spelling of 1938907 in words is "one million, nine hundred thirty-eight thousand, nine hundred seven".