1139015258 has 4 divisors (see below), whose sum is σ = 1708522890. Its totient is φ = 569507628.

The previous prime is 1139015257. The next prime is 1139015323. The reversal of 1139015258 is 8525109311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8525109311 = 179 ⋅47626309.

It can be written as a sum of positive squares in only one way, i.e., 1096073449 + 42941809 = 33107^2 + 6553^2 .

It is not an unprimeable number, because it can be changed into a prime (1139015257) 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 as a sum of consecutive naturals, namely, 284753813 + ... + 284753816.

Almost surely, 2^1139015258 is an apocalyptic number.

1139015258 is a deficient number, since it is larger than the sum of its proper divisors (569507632).

1139015258 is an equidigital number, since it uses as much as digits as its factorization.

1139015258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569507631.

The product of its (nonzero) digits is 10800, while the sum is 35.

The square root of 1139015258 is about 33749.3001112616. The cubic root of 1139015258 is about 1044.3430493096.

The spelling of 1139015258 in words is "one billion, one hundred thirty-nine million, fifteen thousand, two hundred fifty-eight".