1117910880 has 72 divisors (see below), whose sum is σ = 3814875792. Its totient is φ = 298109184.

The previous prime is 1117910869. The next prime is 1117910881. The reversal of 1117910880 is 880197111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1117910881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 386724 + ... + 389603.

It is an arithmetic number, because the mean of its divisors is an integer number (52984386).

Almost surely, 2^1117910880 is an apocalyptic number.

1117910880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1117910880 is an abundant number, since it is smaller than the sum of its proper divisors (2696964912).

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

1117910880 is a wasteful number, since it uses less digits than its factorization.

1117910880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776348 (or 776337 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 36.

The square root of 1117910880 is about 33435.1742929508. The cubic root of 1117910880 is about 1037.8527194780.

The spelling of 1117910880 in words is "one billion, one hundred seventeen million, nine hundred ten thousand, eight hundred eighty".