7378204509 has 12 divisors (see below), whose sum is σ = 11477207196. Its totient is φ = 4540433472.

The previous prime is 7378204501. The next prime is 7378204529. The reversal of 7378204509 is 9054028737.

7378204509 is a `hidden beast` number, since 73 + 78 + 2 + 0 + 4 + 509 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4948700409 + 2429504100 = 70347^2 + 49290^2 .

It is not a de Polignac number, because 7378204509 - 2³ = 7378204501 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7378204501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31530672 + ... + 31530905.

It is an arithmetic number, because the mean of its divisors is an integer number (956433933).

Almost surely, 2^7378204509 is an apocalyptic number.

It is an amenable number.

7378204509 is a deficient number, since it is larger than the sum of its proper divisors (4099002687).

7378204509 is a wasteful number, since it uses less digits than its factorization.

7378204509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63061596 (or 63061593 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 7378204509 is about 85896.4755330508. The cubic root of 7378204509 is about 1946.7800912277.

The spelling of 7378204509 in words is "seven billion, three hundred seventy-eight million, two hundred four thousand, five hundred nine".