1163855 has 16 divisors (see below), whose sum is σ = 1741824. Its totient is φ = 725280.

The previous prime is 1163849. The next prime is 1163873. The reversal of 1163855 is 5583611.

It is not a de Polignac number, because 1163855 - 2⁶ = 1163791 is a prime.

It is a super-2 number, since 2×1163855² = 2709116922050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1127 + ... + 1896.

It is an arithmetic number, because the mean of its divisors is an integer number (108864).

2^1163855 is an apocalyptic number.

1163855 is a deficient number, since it is larger than the sum of its proper divisors (577969).

1163855 is a wasteful number, since it uses less digits than its factorization.

1163855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3046.

The product of its digits is 3600, while the sum is 29.

The square root of 1163855 is about 1078.8211158482. The cubic root of 1163855 is about 105.1880228959.

The spelling of 1163855 in words is "one million, one hundred sixty-three thousand, eight hundred fifty-five".