7180545385 has 16 divisors (see below), whose sum is σ = 9391281984. Its totient is φ = 5238666432.

The previous prime is 7180545353. The next prime is 7180545401. The reversal of 7180545385 is 5835450817.

It is a cyclic number.

It is not a de Polignac number, because 7180545385 - 2⁵ = 7180545353 is a prime.

It is a super-3 number, since 3×7180545385³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 660087 + ... + 670876.

It is an arithmetic number, because the mean of its divisors is an integer number (586955124).

Almost surely, 2^7180545385 is an apocalyptic number.

It is an amenable number.

7180545385 is a deficient number, since it is larger than the sum of its proper divisors (2210736599).

7180545385 is a wasteful number, since it uses less digits than its factorization.

7180545385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331064.

The product of its (nonzero) digits is 672000, while the sum is 46.

The square root of 7180545385 is about 84738.0987808908. The cubic root of 7180545385 is about 1929.2380129783.

The spelling of 7180545385 in words is "seven billion, one hundred eighty million, five hundred forty-five thousand, three hundred eighty-five".