7858040418 has 64 divisors (see below), whose sum is σ = 18009784320. Its totient is φ = 2538191376.

The previous prime is 7858040417. The next prime is 7858040467. The reversal of 7858040418 is 8140408587.

It is a super-2 number, since 2×7858040418² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7858040417) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 281571 + ... + 308217.

It is an arithmetic number, because the mean of its divisors is an integer number (281402880).

Almost surely, 2^7858040418 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7858040418, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9004892160).

7858040418 is an abundant number, since it is smaller than the sum of its proper divisors (10151743902).

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

7858040418 is a wasteful number, since it uses less digits than its factorization.

7858040418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26828 (or 26822 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 45.

The square root of 7858040418 is about 88645.5888242613. The cubic root of 7858040418 is about 1988.0993627018.

The spelling of 7858040418 in words is "seven billion, eight hundred fifty-eight million, forty thousand, four hundred eighteen".