1115455540 has 24 divisors (see below), whose sum is σ = 2359314720. Its totient is φ = 442971168.

The previous prime is 1115455529. The next prime is 1115455603. The reversal of 1115455540 is 455545111.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197842 + ... + 203401.

It is an arithmetic number, because the mean of its divisors is an integer number (98304780).

Almost surely, 2^1115455540 is an apocalyptic number.

1115455540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1115455540 is an abundant number, since it is smaller than the sum of its proper divisors (1243859180).

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

1115455540 is a wasteful number, since it uses less digits than its factorization.

1115455540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401391 (or 401389 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 31.

The square root of 1115455540 is about 33398.4361909356. The cubic root of 1115455540 is about 1037.0923281464.

The spelling of 1115455540 in words is "one billion, one hundred fifteen million, four hundred fifty-five thousand, five hundred forty".