3858497856 has 154 divisors (see below), whose sum is σ = 11496243962. Its totient is φ = 1284906240.

The previous prime is 3858497833. The next prime is 3858497921. The reversal of 3858497856 is 6587948583.

It can be written as a sum of positive squares in only one way, i.e., 3401222400 + 457275456 = 58320^2 + 21384^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3858497793 and 3858497802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 21 ways as a sum of consecutive naturals, for example, 3778626 + ... + 3779646.

Almost surely, 2^3858497856 is an apocalyptic number.

3858497856 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3858497856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5748121981).

3858497856 is an abundant number, since it is smaller than the sum of its proper divisors (7637746106).

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

3858497856 is an frugal number, since it uses more digits than its factorization.

3858497856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063 (or 1026 counting only the distinct ones).

The product of its digits is 58060800, while the sum is 63.

The square root of 3858497856 is about 62116.8081601107. The cubic root of 3858497856 is about 1568.4574970038.

The spelling of 3858497856 in words is "three billion, eight hundred fifty-eight million, four hundred ninety-seven thousand, eight hundred fifty-six".