3673718509 has 2 divisors, whose sum is σ = 3673718510. Its totient is φ = 3673718508.

The previous prime is 3673718507. The next prime is 3673718537. The reversal of 3673718509 is 9058173763.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2997562500 + 676156009 = 54750^2 + 26003^2 .

It is a cyclic number.

It is not a de Polignac number, because 3673718509 - 2¹ = 3673718507 is a prime.

Together with 3673718507, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3673718507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1836859254 + 1836859255.

It is an arithmetic number, because the mean of its divisors is an integer number (1836859255).

Almost surely, 2^3673718509 is an apocalyptic number.

It is an amenable number.

3673718509 is a deficient number, since it is larger than the sum of its proper divisors (1).

3673718509 is an equidigital number, since it uses as much as digits as its factorization.

3673718509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 952560, while the sum is 49.

The square root of 3673718509 is about 60611.2077837094. The cubic root of 3673718509 is about 1543.0095906368.

The spelling of 3673718509 in words is "three billion, six hundred seventy-three million, seven hundred eighteen thousand, five hundred nine".