1115409120 has 96 divisors (see below), whose sum is σ = 4015484928. Its totient is φ = 254949888.

The previous prime is 1115409103. The next prime is 1115409131. The reversal of 1115409120 is 219045111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 162624 + ... + 169343.

It is an arithmetic number, because the mean of its divisors is an integer number (41827968).

Almost surely, 2^1115409120 is an apocalyptic number.

1115409120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1115409120 is an abundant number, since it is smaller than the sum of its proper divisors (2900075808).

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

1115409120 is a wasteful number, since it uses less digits than its factorization.

1115409120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331992 (or 331984 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 24.

The square root of 1115409120 is about 33397.7412409881. The cubic root of 1115409120 is about 1037.0779416493.

The spelling of 1115409120 in words is "one billion, one hundred fifteen million, four hundred nine thousand, one hundred twenty".