381937 has 2 divisors, whose sum is σ = 381938. Its totient is φ = 381936.

The previous prime is 381917. The next prime is 381943. The reversal of 381937 is 739183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 361201 + 20736 = 601^2 + 144^2 .

It is an emirp because it is prime and its reverse (739183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 381937 - 2¹¹ = 379889 is a prime.

381937 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 381899 and 381908.

It is not a weakly prime, because it can be changed into another prime (381917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190968 + 190969.

It is an arithmetic number, because the mean of its divisors is an integer number (190969).

2³⁸¹⁹³⁷ is an apocalyptic number.

It is an amenable number.

381937 is a deficient number, since it is larger than the sum of its proper divisors (1).

381937 is an equidigital number, since it uses as much as digits as its factorization.

381937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 31.

The square root of 381937 is about 618.0105177099. The cubic root of 381937 is about 72.5544260364.

The spelling of 381937 in words is "three hundred eighty-one thousand, nine hundred thirty-seven".