1115391359 has 4 divisors (see below), whose sum is σ = 1153853160. Its totient is φ = 1076929560.

The previous prime is 1115391341. The next prime is 1115391373. The reversal of 1115391359 is 9531935111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9531935111 = 3889 ⋅2450999.

It is a cyclic number.

It is not a de Polignac number, because 1115391359 - 2¹² = 1115387263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112391359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19230857 + ... + 19230914.

It is an arithmetic number, because the mean of its divisors is an integer number (288463290).

Almost surely, 2^1115391359 is an apocalyptic number.

1115391359 is a deficient number, since it is larger than the sum of its proper divisors (38461801).

1115391359 is an equidigital number, since it uses as much as digits as its factorization.

1115391359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38461800.

The product of its digits is 18225, while the sum is 38.

The square root of 1115391359 is about 33397.4753387139. The cubic root of 1115391359 is about 1037.0724370505.

The spelling of 1115391359 in words is "one billion, one hundred fifteen million, three hundred ninety-one thousand, three hundred fifty-nine".