1115513445 has 16 divisors (see below), whose sum is σ = 1828354752. Its totient is φ = 580429440.

The previous prime is 1115513437. The next prime is 1115513453. The reversal of 1115513445 is 5443155111.

It is an interprime number because it is at equal distance from previous prime (1115513437) and next prime (1115513453).

It is not a de Polignac number, because 1115513445 - 2³ = 1115513437 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 906307 + ... + 907536.

It is an arithmetic number, because the mean of its divisors is an integer number (114272172).

Almost surely, 2^1115513445 is an apocalyptic number.

1115513445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1115513445 is a deficient number, since it is larger than the sum of its proper divisors (712841307).

1115513445 is a wasteful number, since it uses less digits than its factorization.

1115513445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1813892.

The product of its digits is 6000, while the sum is 30.

The square root of 1115513445 is about 33399.3030615910. The cubic root of 1115513445 is about 1037.1102735179.

Adding to 1115513445 its reverse (5443155111), we get a palindrome (6558668556).

The spelling of 1115513445 in words is "one billion, one hundred fifteen million, five hundred thirteen thousand, four hundred forty-five".