1656000473 has 2 divisors, whose sum is σ = 1656000474. Its totient is φ = 1656000472.

The previous prime is 1656000469. The next prime is 1656000487. The reversal of 1656000473 is 3740006561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1552123609 + 103876864 = 39397^2 + 10192^2 .

It is an emirp because it is prime and its reverse (3740006561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1656000473 - 2² = 1656000469 is a prime.

It is a super-3 number, since 3×1656000473³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1656000403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 828000236 + 828000237.

It is an arithmetic number, because the mean of its divisors is an integer number (828000237).

Almost surely, 2^1656000473 is an apocalyptic number.

It is an amenable number.

1656000473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1656000473 is an equidigital number, since it uses as much as digits as its factorization.

1656000473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 1656000473 is about 40693.9857104216. The cubic root of 1656000473 is about 1183.0964525820.

The spelling of 1656000473 in words is "one billion, six hundred fifty-six million, four hundred seventy-three", and thus it is an aban number.