7857862380 has 192 divisors, whose sum is σ = 25158591360. Its totient is φ = 2034892800.

The previous prime is 7857862379. The next prime is 7857862381. The reversal of 7857862380 is 832687587.

7857862380 is a `hidden beast` number, since 7 + 8 + 5 + 7 + 8 + 623 + 8 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (7857862379) and next prime (7857862381).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (7857862381) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5689290 + ... + 5690670.

It is an arithmetic number, because the mean of its divisors is an integer number (131034330).

Almost surely, 2^7857862380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7857862380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12579295680).

7857862380 is an abundant number, since it is smaller than the sum of its proper divisors (17300728980).

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

7857862380 is a wasteful number, since it uses less digits than its factorization.

7857862380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697 (or 1689 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 54.

The square root of 7857862380 is about 88644.5846061676. The cubic root of 7857862380 is about 1988.0843479360.

The spelling of 7857862380 in words is "seven billion, eight hundred fifty-seven million, eight hundred sixty-two thousand, three hundred eighty".