7813386140 has 72 divisors (see below), whose sum is σ = 19447247232. Its totient is φ = 2628312960.

The previous prime is 7813386137. The next prime is 7813386211. The reversal of 7813386140 is 416833187.

It is a super-2 number, since 2×7813386140² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23276 + ... + 127155.

It is an arithmetic number, because the mean of its divisors is an integer number (270100656).

Almost surely, 2^7813386140 is an apocalyptic number.

7813386140 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7813386140 is an abundant number, since it is smaller than the sum of its proper divisors (11633861092).

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

7813386140 is a wasteful number, since it uses less digits than its factorization.

7813386140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150507 (or 150498 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 7813386140 is about 88393.3602710068. The cubic root of 7813386140 is about 1984.3263339676.

The spelling of 7813386140 in words is "seven billion, eight hundred thirteen million, three hundred eighty-six thousand, one hundred forty".