1139555164 has 24 divisors (see below), whose sum is σ = 2245694976. Its totient is φ = 501270000.

The previous prime is 1139555161. The next prime is 1139555201. The reversal of 1139555164 is 4615559311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139555161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 416362 + ... + 419089.

It is an arithmetic number, because the mean of its divisors is an integer number (93570624).

Almost surely, 2^1139555164 is an apocalyptic number.

It is an amenable number.

1139555164 is a deficient number, since it is larger than the sum of its proper divisors (1106139812).

1139555164 is a wasteful number, since it uses less digits than its factorization.

1139555164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835497 (or 835495 counting only the distinct ones).

The product of its digits is 81000, while the sum is 40.

The square root of 1139555164 is about 33757.2979368906. The cubic root of 1139555164 is about 1044.5080333482.

The spelling of 1139555164 in words is "one billion, one hundred thirty-nine million, five hundred fifty-five thousand, one hundred sixty-four".