1115205430 has 32 divisors (see below), whose sum is σ = 2078866944. Its totient is φ = 430444896.

The previous prime is 1115205409. The next prime is 1115205431. The reversal of 1115205430 is 345025111.

It is a happy number.

It is a super-2 number, since 2×1115205430² = 2487366302202969800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115205431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20067 + ... + 51313.

It is an arithmetic number, because the mean of its divisors is an integer number (64964592).

Almost surely, 2^1115205430 is an apocalyptic number.

1115205430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1115205430 is a deficient number, since it is larger than the sum of its proper divisors (963661514).

1115205430 is a wasteful number, since it uses less digits than its factorization.

1115205430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31380.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1115205430 is about 33394.6916440323. The cubic root of 1115205430 is about 1037.0148092787.

The spelling of 1115205430 in words is "one billion, one hundred fifteen million, two hundred five thousand, four hundred thirty".