1115661340 has 48 divisors (see below), whose sum is σ = 2392286400. Its totient is φ = 436943360.

The previous prime is 1115661319. The next prime is 1115661341. The reversal of 1115661340 is 431665111.

It is a junction number, because it is equal to n+sod(n) for n = 1115661299 and 1115661308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115661341) 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, 208944 + ... + 214216.

It is an arithmetic number, because the mean of its divisors is an integer number (49839300).

Almost surely, 2^1115661340 is an apocalyptic number.

1115661340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1115661340 is an abundant number, since it is smaller than the sum of its proper divisors (1276625060).

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

1115661340 is a wasteful number, since it uses less digits than its factorization.

1115661340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5502 (or 5500 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 1115661340 is about 33401.5170314164. The cubic root of 1115661340 is about 1037.1561049231.

The spelling of 1115661340 in words is "one billion, one hundred fifteen million, six hundred sixty-one thousand, three hundred forty".