3781237 has 2 divisors, whose sum is σ = 3781238. Its totient is φ = 3781236.

The previous prime is 3781229. The next prime is 3781243. The reversal of 3781237 is 7321873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3511876 + 269361 = 1874^2 + 519^2 .

It is a cyclic number.

It is not a de Polignac number, because 3781237 - 2³ = 3781229 is a prime.

It is equal to p₂₆₈₇₅₃ and since 3781237 and 268753 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 3781199 and 3781208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3781277) 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 as a sum of consecutive naturals, namely, 1890618 + 1890619.

It is an arithmetic number, because the mean of its divisors is an integer number (1890619).

Almost surely, 2^3781237 is an apocalyptic number.

It is an amenable number.

3781237 is a deficient number, since it is larger than the sum of its proper divisors (1).

3781237 is an equidigital number, since it uses as much as digits as its factorization.

3781237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056, while the sum is 31.

The square root of 3781237 is about 1944.5403055735. The cubic root of 3781237 is about 155.7918135706.

The spelling of 3781237 in words is "three million, seven hundred eighty-one thousand, two hundred thirty-seven".