7818962540 has 12 divisors (see below), whose sum is σ = 16419821376. Its totient is φ = 3127585008.

The previous prime is 7818962537. The next prime is 7818962561. The reversal of 7818962540 is 452698187.

It is a super-2 number, since 2×7818962540² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195474044 + ... + 195474083.

It is an arithmetic number, because the mean of its divisors is an integer number (1368318448).

Almost surely, 2^7818962540 is an apocalyptic number.

It is an amenable number.

7818962540 is an abundant number, since it is smaller than the sum of its proper divisors (8600858836).

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

7818962540 is a wasteful number, since it uses less digits than its factorization.

7818962540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390948136 (or 390948134 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 50.

The square root of 7818962540 is about 88424.8977381371. The cubic root of 7818962540 is about 1984.7982917830.

The spelling of 7818962540 in words is "seven billion, eight hundred eighteen million, nine hundred sixty-two thousand, five hundred forty".