1110889840 has 20 divisors (see below), whose sum is σ = 2582819064. Its totient is φ = 444355904.

The previous prime is 1110889831. The next prime is 1110889841. The reversal of 1110889840 is 489880111.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 1110889793 and 1110889802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1110889841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6942982 + ... + 6943141.

Almost surely, 2^1110889840 is an apocalyptic number.

1110889840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1110889840 is an abundant number, since it is smaller than the sum of its proper divisors (1471929224).

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

1110889840 is a wasteful number, since it uses less digits than its factorization.

1110889840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13886136 (or 13886130 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 40.

The square root of 1110889840 is about 33330.0141014072. The cubic root of 1110889840 is about 1035.6754100079.

The spelling of 1110889840 in words is "one billion, one hundred ten million, eight hundred eighty-nine thousand, eight hundred forty".