1656885650 has 24 divisors (see below), whose sum is σ = 3522066240. Its totient is φ = 568074960.

The previous prime is 1656885649. The next prime is 1656885683. The reversal of 1656885650 is 565886561.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2366630 + ... + 2367329.

It is an arithmetic number, because the mean of its divisors is an integer number (146752760).

Almost surely, 2^1656885650 is an apocalyptic number.

1656885650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1656885650 is an abundant number, since it is smaller than the sum of its proper divisors (1865180590).

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

1656885650 is a wasteful number, since it uses less digits than its factorization.

1656885650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4733978 (or 4733973 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 50.

The square root of 1656885650 is about 40704.8602749107. The cubic root of 1656885650 is about 1183.3072140414.

The spelling of 1656885650 in words is "one billion, six hundred fifty-six million, eight hundred eighty-five thousand, six hundred fifty".