1115653655 has 4 divisors (see below), whose sum is σ = 1338784392. Its totient is φ = 892522920.

The previous prime is 1115653639. The next prime is 1115653661. The reversal of 1115653655 is 5563565111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5563565111 = 13 ⋅427966547.

It is not a de Polignac number, because 1115653655 - 2⁴ = 1115653639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111565361 + ... + 111565370.

It is an arithmetic number, because the mean of its divisors is an integer number (334696098).

Almost surely, 2^1115653655 is an apocalyptic number.

1115653655 is a deficient number, since it is larger than the sum of its proper divisors (223130737).

1115653655 is an equidigital number, since it uses as much as digits as its factorization.

1115653655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223130736.

The product of its digits is 67500, while the sum is 38.

The square root of 1115653655 is about 33401.4019915332. The cubic root of 1115653655 is about 1037.1537235066.

The spelling of 1115653655 in words is "one billion, one hundred fifteen million, six hundred fifty-three thousand, six hundred fifty-five".