1115523140 has 12 divisors (see below), whose sum is σ = 2342598636. Its totient is φ = 446209248.

The previous prime is 1115523139. The next prime is 1115523163. The reversal of 1115523140 is 413255111.

It can be written as a sum of positive squares in 2 ways, for example, as 657819904 + 457703236 = 25648^2 + 21394^2 .

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, 27888059 + ... + 27888098.

It is an arithmetic number, because the mean of its divisors is an integer number (195216553).

Almost surely, 2^1115523140 is an apocalyptic number.

1115523140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1115523140 is an abundant number, since it is smaller than the sum of its proper divisors (1227075496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1115523140 is a wasteful number, since it uses less digits than its factorization.

1115523140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55776166 (or 55776164 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1115523140 is about 33399.4481990347. The cubic root of 1115523140 is about 1037.1132780402.

Adding to 1115523140 its reverse (413255111), we get a palindrome (1528778251).

The spelling of 1115523140 in words is "one billion, one hundred fifteen million, five hundred twenty-three thousand, one hundred forty".