1118088415609 has 27 divisors (see below), whose sum is σ = 1243027976463. Its totient is φ = 1004950108800.

The previous prime is 1118088415603. The next prime is 1118088415627. The reversal of 1118088415609 is 9065148808111.

The square root of 1118088415609 is 1057397.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 502064359225 + 616024056384 = 708565^2 + 784872^2 .

It is not a de Polignac number, because 1118088415609 - 2¹³ = 1118088407417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1118088415603) 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 26 ways as a sum of consecutive naturals, for example, 1128242104 + ... + 1128243094.

Almost surely, 2^{1118088415609} is an apocalyptic number.

1118088415609 is the 1057397-th square number.

1118088415609 is the 528699-th centered octagonal number.

It is an amenable number.

1118088415609 is a deficient number, since it is larger than the sum of its proper divisors (124939560854).

1118088415609 is an frugal number, since it uses more digits than its factorization.

1118088415609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2198 (or 1099 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 52.

The spelling of 1118088415609 in words is "one trillion, one hundred eighteen billion, eighty-eight million, four hundred fifteen thousand, six hundred nine".