1084857855 has 16 divisors (see below), whose sum is σ = 1764229344. Its totient is φ = 569105280.

The previous prime is 1084857821. The next prime is 1084857857. The reversal of 1084857855 is 5587584801.

It is not a de Polignac number, because 1084857855 - 2⁶ = 1084857791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1084857798 and 1084857807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1084857857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 591904 + ... + 593733.

It is an arithmetic number, because the mean of its divisors is an integer number (110264334).

Almost surely, 2^1084857855 is an apocalyptic number.

1084857855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1084857855 is a deficient number, since it is larger than the sum of its proper divisors (679371489).

1084857855 is a wasteful number, since it uses less digits than its factorization.

1084857855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185706.

The product of its (nonzero) digits is 1792000, while the sum is 51.

The square root of 1084857855 is about 32937.1804348824. The cubic root of 1084857855 is about 1027.5215664336.

The spelling of 1084857855 in words is "one billion, eighty-four million, eight hundred fifty-seven thousand, eight hundred fifty-five".