1115415920 has 40 divisors (see below), whose sum is σ = 2609889504. Its totient is φ = 443319552.

The previous prime is 1115415913. The next prime is 1115415941. The reversal of 1115415920 is 295145111.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31844 + ... + 56963.

Almost surely, 2^1115415920 is an apocalyptic number.

1115415920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1115415920 is an abundant number, since it is smaller than the sum of its proper divisors (1494473584).

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

1115415920 is a wasteful number, since it uses less digits than its factorization.

1115415920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88977 (or 88971 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 29.

The square root of 1115415920 is about 33397.8430441249. The cubic root of 1115415920 is about 1037.0800491319.

The spelling of 1115415920 in words is "one billion, one hundred fifteen million, four hundred fifteen thousand, nine hundred twenty".