3685740740609 has 2 divisors, whose sum is σ = 3685740740610. Its totient is φ = 3685740740608.

The previous prime is 3685740740597. The next prime is 3685740740621. The reversal of 3685740740609 is 9060470475863.

It is a balanced prime because it is at equal distance from previous prime (3685740740597) and next prime (3685740740621).

It can be written as a sum of positive squares in only one way, i.e., 2681416075009 + 1004324665600 = 1637503^2 + 1002160^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3685740740609 is a prime.

It is not a weakly prime, because it can be changed into another prime (3685740740659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1842870370304 + 1842870370305.

It is an arithmetic number, because the mean of its divisors is an integer number (1842870370305).

Almost surely, 2^{3685740740609} is an apocalyptic number.

It is an amenable number.

3685740740609 is a deficient number, since it is larger than the sum of its proper divisors (1).

3685740740609 is an equidigital number, since it uses as much as digits as its factorization.

3685740740609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30481920, while the sum is 59.

The spelling of 3685740740609 in words is "three trillion, six hundred eighty-five billion, seven hundred forty million, seven hundred forty thousand, six hundred nine".