618248081 has 16 divisors (see below), whose sum is σ = 681912000. Its totient is φ = 555859200.

The previous prime is 618248077. The next prime is 618248093. The reversal of 618248081 is 180842816.

It is not a de Polignac number, because 618248081 - 2² = 618248077 is a prime.

It is a super-2 number, since 2×618248081² = 764461379320365122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (618248681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 588845 + ... + 589893.

It is an arithmetic number, because the mean of its divisors is an integer number (42619500).

Almost surely, 2^618248081 is an apocalyptic number.

It is an amenable number.

618248081 is a deficient number, since it is larger than the sum of its proper divisors (63663919).

618248081 is a wasteful number, since it uses less digits than its factorization.

618248081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600.

The product of its (nonzero) digits is 24576, while the sum is 38.

The square root of 618248081 is about 24864.5949293368. The cubic root of 618248081 is about 851.8979876136.

The spelling of 618248081 in words is "six hundred eighteen million, two hundred forty-eight thousand, eighty-one".