1656908013 has 4 divisors (see below), whose sum is σ = 2209210688. Its totient is φ = 1104605340.

The previous prime is 1656907979. The next prime is 1656908027. The reversal of 1656908013 is 3108096561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1656908013 - 2⁹ = 1656907501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1656908093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276151333 + ... + 276151338.

It is an arithmetic number, because the mean of its divisors is an integer number (552302672).

Almost surely, 2^1656908013 is an apocalyptic number.

It is an amenable number.

1656908013 is a deficient number, since it is larger than the sum of its proper divisors (552302675).

1656908013 is an equidigital number, since it uses as much as digits as its factorization.

1656908013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552302674.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 1656908013 is about 40705.1349709100. The cubic root of 1656908013 is about 1183.3125377200.

The spelling of 1656908013 in words is "one billion, six hundred fifty-six million, nine hundred eight thousand, thirteen".