7943898642 has 8 divisors (see below), whose sum is σ = 15887797296. Its totient is φ = 2647966212.

The previous prime is 7943898637. The next prime is 7943898649. The reversal of 7943898642 is 2468983497.

It is a sphenic number, since it is the product of 3 distinct primes.

7943898642 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (7943898649) by changing a digit.

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, 661991548 + ... + 661991559.

It is an arithmetic number, because the mean of its divisors is an integer number (1985974662).

Almost surely, 2^7943898642 is an apocalyptic number.

7943898642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7943898642 is a wasteful number, since it uses less digits than its factorization.

7943898642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323983112.

The product of its digits is 20901888, while the sum is 60.

The square root of 7943898642 is about 89128.5512167678. The cubic root of 7943898642 is about 1995.3139157157.

The spelling of 7943898642 in words is "seven billion, nine hundred forty-three million, eight hundred ninety-eight thousand, six hundred forty-two".