7894201918 has 16 divisors (see below), whose sum is σ = 12072429216. Its totient is φ = 3870154080.

The previous prime is 7894201897. The next prime is 7894201919. The reversal of 7894201918 is 8191024987.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7894201919) 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, 148855 + ... + 194797.

It is an arithmetic number, because the mean of its divisors is an integer number (754526826).

Almost surely, 2^7894201918 is an apocalyptic number.

7894201918 is a deficient number, since it is larger than the sum of its proper divisors (4178227298).

7894201918 is a wasteful number, since it uses less digits than its factorization.

7894201918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47619.

The product of its (nonzero) digits is 290304, while the sum is 49.

The square root of 7894201918 is about 88849.3214267841. The cubic root of 7894201918 is about 1991.1443396806.

The spelling of 7894201918 in words is "seven billion, eight hundred ninety-four million, two hundred one thousand, nine hundred eighteen".