3781433 has 2 divisors, whose sum is σ = 3781434. Its totient is φ = 3781432.

The previous prime is 3781423. The next prime is 3781447. The reversal of 3781433 is 3341873.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3736489 + 44944 = 1933^2 + 212^2 .

It is a cyclic number.

It is not a de Polignac number, because 3781433 - 2¹⁴ = 3765049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3781396 and 3781405.

It is not a weakly prime, because it can be changed into another prime (3781403) 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, 1890716 + 1890717.

It is an arithmetic number, because the mean of its divisors is an integer number (1890717).

Almost surely, 2^3781433 is an apocalyptic number.

It is an amenable number.

3781433 is a deficient number, since it is larger than the sum of its proper divisors (1).

3781433 is an equidigital number, since it uses as much as digits as its factorization.

3781433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 29.

The square root of 3781433 is about 1944.5907024359. The cubic root of 3781433 is about 155.7945053412.

The spelling of 3781433 in words is "three million, seven hundred eighty-one thousand, four hundred thirty-three".