1466818640 has 80 divisors (see below), whose sum is σ = 3902845440. Its totient is φ = 502225920.

The previous prime is 1466818609. The next prime is 1466818663. The reversal of 1466818640 is 468186641.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 1466818591 and 1466818600.

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, 580580 + ... + 583100.

It is an arithmetic number, because the mean of its divisors is an integer number (48785568).

Almost surely, 2^1466818640 is an apocalyptic number.

1466818640 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 1466818640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1951422720).

1466818640 is an abundant number, since it is smaller than the sum of its proper divisors (2436026800).

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

1466818640 is a wasteful number, since it uses less digits than its factorization.

1466818640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3580 (or 3574 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 44.

The square root of 1466818640 is about 38299.0683959806. The cubic root of 1466818640 is about 1136.2105218846.

The spelling of 1466818640 in words is "one billion, four hundred sixty-six million, eight hundred eighteen thousand, six hundred forty".