1082859857 has 4 divisors (see below), whose sum is σ = 1083402480. Its totient is φ = 1082317236.

The previous prime is 1082859847. The next prime is 1082859859. The reversal of 1082859857 is 7589582801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7589582801 = 24421 ⋅310781.

It is a cyclic number.

It is not a de Polignac number, because 1082859857 - 2⁸ = 1082859601 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1082859799 and 1082859808.

It is not an unprimeable number, because it can be changed into a prime (1082859859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268307 + ... + 272312.

It is an arithmetic number, because the mean of its divisors is an integer number (270850620).

Almost surely, 2^1082859857 is an apocalyptic number.

It is an amenable number.

1082859857 is a deficient number, since it is larger than the sum of its proper divisors (542623).

1082859857 is an equidigital number, since it uses as much as digits as its factorization.

1082859857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542622.

The product of its (nonzero) digits is 1612800, while the sum is 53.

The square root of 1082859857 is about 32906.8360223222. The cubic root of 1082859857 is about 1026.8903784692.

The spelling of 1082859857 in words is "one billion, eighty-two million, eight hundred fifty-nine thousand, eight hundred fifty-seven".