1066118540 has 48 divisors (see below), whose sum is σ = 2362530240. Its totient is φ = 403307520.

The previous prime is 1066118513. The next prime is 1066118549. The reversal of 1066118540 is 458116601.

It is a super-2 number, since 2×1066118540² = 2273217482663463200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1066118497 and 1066118506.

It is not an unprimeable number, because it can be changed into a prime (1066118549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27920 + ... + 53960.

It is an arithmetic number, because the mean of its divisors is an integer number (49219380).

Almost surely, 2^1066118540 is an apocalyptic number.

1066118540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1066118540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1181265120).

1066118540 is an abundant number, since it is smaller than the sum of its proper divisors (1296411700).

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

1066118540 is a wasteful number, since it uses less digits than its factorization.

1066118540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26162 (or 26160 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 1066118540 is about 32651.4707172587. The cubic root of 1066118540 is about 1021.5708654402.

The spelling of 1066118540 in words is "one billion, sixty-six million, one hundred eighteen thousand, five hundred forty".