3720473895609 has 27 divisors (see below), whose sum is σ = 5580661667503. Its totient is φ = 2480211772344.

The previous prime is 3720473895601. The next prime is 3720473895629. The reversal of 3720473895609 is 9065983740273.

The square root of 3720473895609 is 1928853.

It is a perfect power (a square), and thus also a powerful number.

3720473895609 is a `hidden beast` number, since 3 + 7 + 20 + 47 + 3 + 8 + 9 + 560 + 9 = 666.

3720473895609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1915137693225 + 1805336202384 = 1383885^2 + 1343628^2 .

It is a tau number, because it is divible by the number of its divisors (27).

It is not a de Polignac number, because 3720473895609 - 2³ = 3720473895601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3720473895601) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 156225187 + ... + 156248999.

Almost surely, 2^{3720473895609} is an apocalyptic number.

3720473895609 is the 1928853-rd square number.

3720473895609 is the 964427-th centered octagonal number.

It is an amenable number.

3720473895609 is a deficient number, since it is larger than the sum of its proper divisors (1860187771894).

3720473895609 is an frugal number, since it uses more digits than its factorization.

3720473895609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47650 (or 23816 counting only the distinct ones).

The product of its (nonzero) digits is 68584320, while the sum is 63.

The spelling of 3720473895609 in words is "three trillion, seven hundred twenty billion, four hundred seventy-three million, eight hundred ninety-five thousand, six hundred nine".