1656123968 has 28 divisors (see below), whose sum is σ = 3293467632. Its totient is φ = 826273920.

The previous prime is 1656123941. The next prime is 1656123991. The reversal of 1656123968 is 8693216561.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2183 + ... + 57593.

It is an arithmetic number, because the mean of its divisors is an integer number (117623844).

Almost surely, 2^1656123968 is an apocalyptic number.

It is an amenable number.

1656123968 is a deficient number, since it is larger than the sum of its proper divisors (1637343664).

1656123968 is an equidigital number, since it uses as much as digits as its factorization.

1656123968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55890 (or 55880 counting only the distinct ones).

The product of its digits is 466560, while the sum is 47.

The square root of 1656123968 is about 40695.5030439482. The cubic root of 1656123968 is about 1183.1258613627.

The spelling of 1656123968 in words is "one billion, six hundred fifty-six million, one hundred twenty-three thousand, nine hundred sixty-eight".