1144555115 has 16 divisors (see below), whose sum is σ = 1510133760. Its totient is φ = 825844320.

The previous prime is 1144555109. The next prime is 1144555121. The reversal of 1144555115 is 5115554411.

It is an interprime number because it is at equal distance from previous prime (1144555109) and next prime (1144555121).

It is not a de Polignac number, because 1144555115 - 2⁴ = 1144555099 is a prime.

It is a super-2 number, since 2×1144555115² = 2620012822545326450, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74945 + ... + 88914.

It is an arithmetic number, because the mean of its divisors is an integer number (94383360).

Almost surely, 2^1144555115 is an apocalyptic number.

1144555115 is a deficient number, since it is larger than the sum of its proper divisors (365578645).

1144555115 is a wasteful number, since it uses less digits than its factorization.

1144555115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164002.

The product of its digits is 10000, while the sum is 32.

The square root of 1144555115 is about 33831.2742148445. The cubic root of 1144555115 is about 1046.0334441961.

The spelling of 1144555115 in words is "one billion, one hundred forty-four million, five hundred fifty-five thousand, one hundred fifteen".