7722142818 has 32 divisors (see below), whose sum is σ = 16636729536. Its totient is φ = 2375412288.

The previous prime is 7722142807. The next prime is 7722142829. The reversal of 7722142818 is 8182412277.

It is an interprime number because it is at equal distance from previous prime (7722142807) and next prime (7722142829).

It is a super-2 number, since 2×7722142818² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7722142818.

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, 343780 + ... + 365552.

It is an arithmetic number, because the mean of its divisors is an integer number (519897798).

Almost surely, 2^7722142818 is an apocalyptic number.

7722142818 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

7722142818 is an abundant number, since it is smaller than the sum of its proper divisors (8914586718).

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

7722142818 is a wasteful number, since it uses less digits than its factorization.

7722142818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26338.

The product of its digits is 100352, while the sum is 42.

The square root of 7722142818 is about 87875.7237125248. The cubic root of 7722142818 is about 1976.5718677404.

The spelling of 7722142818 in words is "seven billion, seven hundred twenty-two million, one hundred forty-two thousand, eight hundred eighteen".