2146645018 has 24 divisors (see below), whose sum is σ = 3874842900. Its totient is φ = 888265728.

The previous prime is 2146645013. The next prime is 2146645037. The reversal of 2146645018 is 8105466412.

It can be written as a sum of positive squares in 2 ways, for example, as 2101580649 + 45064369 = 45843^2 + 6713^2 .

It is not an unprimeable number, because it can be changed into a prime (2146645013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 374823 + ... + 380506.

Almost surely, 2^2146645018 is an apocalyptic number.

2146645018 is a deficient number, since it is larger than the sum of its proper divisors (1728197882).

2146645018 is a wasteful number, since it uses less digits than its factorization.

2146645018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755374 (or 755367 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 2146645018 is about 46331.9006517108. The cubic root of 2146645018 is about 1289.9911899725.

The spelling of 2146645018 in words is "two billion, one hundred forty-six million, six hundred forty-five thousand, eighteen".