1139894205 has 32 divisors (see below), whose sum is σ = 1850428800. Its totient is φ = 599139072.

The previous prime is 1139894179. The next prime is 1139894207. The reversal of 1139894205 is 5024989311.

It is not a de Polignac number, because 1139894205 - 2⁶ = 1139894141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139894207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 320326 + ... + 323864.

It is an arithmetic number, because the mean of its divisors is an integer number (57825900).

Almost surely, 2^1139894205 is an apocalyptic number.

1139894205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1139894205 is a deficient number, since it is larger than the sum of its proper divisors (710534595).

1139894205 is a wasteful number, since it uses less digits than its factorization.

1139894205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3853.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 1139894205 is about 33762.3193071803. The cubic root of 1139894205 is about 1044.6116105875.

The spelling of 1139894205 in words is "one billion, one hundred thirty-nine million, eight hundred ninety-four thousand, two hundred five".