7812642018 has 32 divisors (see below), whose sum is σ = 15704507520. Its totient is φ = 2591043840.

The previous prime is 7812642017. The next prime is 7812642067. The reversal of 7812642018 is 8102462187.

It is a happy number.

It is a super-2 number, since 2×7812642018² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7812642017) 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, 1025403 + ... + 1032993.

It is an arithmetic number, because the mean of its divisors is an integer number (490765860).

Almost surely, 2^7812642018 is an apocalyptic number.

7812642018 is an abundant number, since it is smaller than the sum of its proper divisors (7891865502).

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

7812642018 is a wasteful number, since it uses less digits than its factorization.

7812642018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8442.

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 7812642018 is about 88389.1510197943. The cubic root of 7812642018 is about 1984.2633383286.

The spelling of 7812642018 in words is "seven billion, eight hundred twelve million, six hundred forty-two thousand, eighteen".