1185005856 has 48 divisors (see below), whose sum is σ = 3130493184. Its totient is φ = 392481024.

The previous prime is 1185005849. The next prime is 1185005863. The reversal of 1185005856 is 6585005811.

It is an interprime number because it is at equal distance from previous prime (1185005849) and next prime (1185005863).

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24240 + ... + 54383.

It is an arithmetic number, because the mean of its divisors is an integer number (65218608).

Almost surely, 2^1185005856 is an apocalyptic number.

1185005856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1185005856 is an abundant number, since it is smaller than the sum of its proper divisors (1945487328).

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

1185005856 is a wasteful number, since it uses less digits than its factorization.

1185005856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78793 (or 78785 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 39.

The square root of 1185005856 is about 34423.9140133716. The cubic root of 1185005856 is about 1058.2139901608.

The spelling of 1185005856 in words is "one billion, one hundred eighty-five million, five thousand, eight hundred fifty-six".