1111385385 has 24 divisors (see below), whose sum is σ = 2101529664. Its totient is φ = 538853280.

The previous prime is 1111385381. The next prime is 1111385399. The reversal of 1111385385 is 5835831111.

1111385385 is a `hidden beast` number, since 1 + 1 + 113 + 8 + 538 + 5 = 666.

It is not a de Polignac number, because 1111385385 - 2² = 1111385381 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1111385381) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1122117 + ... + 1123106.

It is an arithmetic number, because the mean of its divisors is an integer number (87563736).

Almost surely, 2^1111385385 is an apocalyptic number.

1111385385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1111385385 is a deficient number, since it is larger than the sum of its proper divisors (990144279).

1111385385 is a wasteful number, since it uses less digits than its factorization.

1111385385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245245 (or 2245242 counting only the distinct ones).

The product of its digits is 14400, while the sum is 36.

The square root of 1111385385 is about 33337.4471878097. The cubic root of 1111385385 is about 1035.8293849142.

The spelling of 1111385385 in words is "one billion, one hundred eleven million, three hundred eighty-five thousand, three hundred eighty-five".