1656800460 has 192 divisors, whose sum is σ = 5929190400. Its totient is φ = 376233984.

The previous prime is 1656800441. The next prime is 1656800477. The reversal of 1656800460 is 640086561.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 614796 + ... + 617484.

It is an arithmetic number, because the mean of its divisors is an integer number (30881200).

Almost surely, 2^1656800460 is an apocalyptic number.

1656800460 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 1656800460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2964595200).

1656800460 is an abundant number, since it is smaller than the sum of its proper divisors (4272389940).

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

1656800460 is a wasteful number, since it uses less digits than its factorization.

1656800460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2877 (or 2869 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1656800460 is about 40703.8138262252. The cubic root of 1656800460 is about 1183.2869334889.

The spelling of 1656800460 in words is "one billion, six hundred fifty-six million, eight hundred thousand, four hundred sixty".