1139264555 has 16 divisors (see below), whose sum is σ = 1606125024. Its totient is φ = 764820480.

The previous prime is 1139264551. The next prime is 1139264573. The reversal of 1139264555 is 5554629311.

It is not a de Polignac number, because 1139264555 - 2² = 1139264551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1139264551) 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 15 ways as a sum of consecutive naturals, for example, 795974 + ... + 797403.

It is an arithmetic number, because the mean of its divisors is an integer number (100382814).

Almost surely, 2^1139264555 is an apocalyptic number.

1139264555 is a deficient number, since it is larger than the sum of its proper divisors (466860469).

1139264555 is a wasteful number, since it uses less digits than its factorization.

1139264555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1593406.

The product of its digits is 162000, while the sum is 41.

The square root of 1139264555 is about 33752.9932746712. The cubic root of 1139264555 is about 1044.4192357626.

The spelling of 1139264555 in words is "one billion, one hundred thirty-nine million, two hundred sixty-four thousand, five hundred fifty-five".