3745661237 has 2 divisors, whose sum is σ = 3745661238. Its totient is φ = 3745661236.

The previous prime is 3745661189. The next prime is 3745661261. The reversal of 3745661237 is 7321665473.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2205805156 + 1539856081 = 46966^2 + 39241^2 .

It is an emirp because it is prime and its reverse (7321665473) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3745661237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3745661137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1872830618 + 1872830619.

It is an arithmetic number, because the mean of its divisors is an integer number (1872830619).

Almost surely, 2^3745661237 is an apocalyptic number.

It is an amenable number.

3745661237 is a deficient number, since it is larger than the sum of its proper divisors (1).

3745661237 is an equidigital number, since it uses as much as digits as its factorization.

3745661237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 44.

The square root of 3745661237 is about 61201.8074651395. The cubic root of 3745661237 is about 1553.0168419471.

The spelling of 3745661237 in words is "three billion, seven hundred forty-five million, six hundred sixty-one thousand, two hundred thirty-seven".