1466537646 has 64 divisors (see below), whose sum is σ = 3476422656. Its totient is φ = 403596000.

The previous prime is 1466537641. The next prime is 1466537647. The reversal of 1466537646 is 6467356641.

It is a junction number, because it is equal to n+sod(n) for n = 1466537595 and 1466537604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1466537641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 287821 + ... + 292871.

It is an arithmetic number, because the mean of its divisors is an integer number (54319104).

Almost surely, 2^1466537646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1466537646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1738211328).

1466537646 is an abundant number, since it is smaller than the sum of its proper divisors (2009885010).

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

1466537646 is a wasteful number, since it uses less digits than its factorization.

1466537646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5317.

The product of its digits is 2177280, while the sum is 48.

The square root of 1466537646 is about 38295.3998020650. The cubic root of 1466537646 is about 1136.1379637828.

The spelling of 1466537646 in words is "one billion, four hundred sixty-six million, five hundred thirty-seven thousand, six hundred forty-six".