7845194840 has 64 divisors (see below), whose sum is σ = 20869012800. Its totient is φ = 2597027328.

The previous prime is 7845194827. The next prime is 7845194909. The reversal of 7845194840 is 484915487.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 474959 + ... + 491198.

It is an arithmetic number, because the mean of its divisors is an integer number (326078325).

Almost surely, 2^7845194840 is an apocalyptic number.

7845194840 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7845194840 is an abundant number, since it is smaller than the sum of its proper divisors (13023817960).

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

7845194840 is a wasteful number, since it uses less digits than its factorization.

7845194840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966204 (or 966200 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 50.

The square root of 7845194840 is about 88573.1044956650. The cubic root of 7845194840 is about 1987.0154532035.

The spelling of 7845194840 in words is "seven billion, eight hundred forty-five million, one hundred ninety-four thousand, eight hundred forty".