2640303018 has 12 divisors (see below), whose sum is σ = 5720656578. Its totient is φ = 880101000.

The previous prime is 2640303013. The next prime is 2640303047. The reversal of 2640303018 is 8103030462.

It is a happy number.

2640303018 is a `hidden beast` number, since 2 + 640 + 3 + 0 + 3 + 0 + 18 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2120326209 + 519976809 = 46047^2 + 22803^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2640302982 and 2640303000.

It is not an unprimeable number, because it can be changed into a prime (2640303013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73341733 + ... + 73341768.

Almost surely, 2^2640303018 is an apocalyptic number.

2640303018 is an abundant number, since it is smaller than the sum of its proper divisors (3080353560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2640303018 is a wasteful number, since it uses less digits than its factorization.

2640303018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146683509 (or 146683506 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 2640303018 is about 51383.8789699649. The cubic root of 2640303018 is about 1382.1375223284.

The spelling of 2640303018 in words is "two billion, six hundred forty million, three hundred three thousand, eighteen".