7740061818 has 16 divisors (see below), whose sum is σ = 16390719360. Its totient is φ = 2428254656.

The previous prime is 7740061811. The next prime is 7740061829. The reversal of 7740061818 is 8181600477.

It is a happy number.

It is a super-2 number, since 2×7740061818² (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 7740061818.

It is not an unprimeable number, because it can be changed into a prime (7740061811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37941378 + ... + 37941581.

It is an arithmetic number, because the mean of its divisors is an integer number (1024419960).

Almost surely, 2^7740061818 is an apocalyptic number.

7740061818 is an abundant number, since it is smaller than the sum of its proper divisors (8650657542).

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

7740061818 is a wasteful number, since it uses less digits than its factorization.

7740061818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75882981.

The product of its (nonzero) digits is 75264, while the sum is 42.

The square root of 7740061818 is about 87977.6211203736. The cubic root of 7740061818 is about 1978.0995452162.

The spelling of 7740061818 in words is "seven billion, seven hundred forty million, sixty-one thousand, eight hundred eighteen".