3730861 has 2 divisors, whose sum is σ = 3730862. Its totient is φ = 3730860.

The previous prime is 3730849. The next prime is 3730889. The reversal of 3730861 is 1680373.

It is an a-pointer prime, because the next prime (3730889) can be obtained adding 3730861 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3261636 + 469225 = 1806^2 + 685^2 .

It is an emirp because it is prime and its reverse (1680373) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3730861 - 2⁷ = 3730733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3730801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1865430 + 1865431.

It is an arithmetic number, because the mean of its divisors is an integer number (1865431).

Almost surely, 2^3730861 is an apocalyptic number.

It is an amenable number.

3730861 is a deficient number, since it is larger than the sum of its proper divisors (1).

3730861 is an equidigital number, since it uses as much as digits as its factorization.

3730861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 3730861 is about 1931.5436831716. The cubic root of 3730861 is about 155.0968662638.

The spelling of 3730861 in words is "three million, seven hundred thirty thousand, eight hundred sixty-one".