7845974894 has 16 divisors (see below), whose sum is σ = 11914535808. Its totient is φ = 3874493112.

The previous prime is 7845974887. The next prime is 7845974897. The reversal of 7845974894 is 4984795487.

7845974894 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×7845974894² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7845974894.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7845974897) 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 7 ways as a sum of consecutive naturals, for example, 742919 + ... + 753405.

It is an arithmetic number, because the mean of its divisors is an integer number (744658488).

Almost surely, 2^7845974894 is an apocalyptic number.

7845974894 is a deficient number, since it is larger than the sum of its proper divisors (4068560914).

7845974894 is a wasteful number, since it uses less digits than its factorization.

7845974894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15079.

The product of its digits is 81285120, while the sum is 65.

The square root of 7845974894 is about 88577.5078335353. The cubic root of 7845974894 is about 1987.0813078663.

The spelling of 7845974894 in words is "seven billion, eight hundred forty-five million, nine hundred seventy-four thousand, eight hundred ninety-four".