7857493620 has 48 divisors (see below), whose sum is σ = 22132752768. Its totient is φ = 2082782080.

The previous prime is 7857493607. The next prime is 7857493621. The reversal of 7857493620 is 263947587.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7857493621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 382071 + ... + 402110.

It is an arithmetic number, because the mean of its divisors is an integer number (461099016).

Almost surely, 2^7857493620 is an apocalyptic number.

It is an amenable number.

7857493620 is an abundant number, since it is smaller than the sum of its proper divisors (14275259148).

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

7857493620 is a wasteful number, since it uses less digits than its factorization.

7857493620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784360 (or 784358 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 51.

The square root of 7857493620 is about 88642.5045900667. The cubic root of 7857493620 is about 1988.0532479830.

The spelling of 7857493620 in words is "seven billion, eight hundred fifty-seven million, four hundred ninety-three thousand, six hundred twenty".