1656264853 has 4 divisors (see below), whose sum is σ = 1661556748. Its totient is φ = 1650972960.

The previous prime is 1656264851. The next prime is 1656264881. The reversal of 1656264853 is 3584626561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3584626561 = 97 ⋅36954913.

It can be written as a sum of positive squares in 2 ways, for example, as 9690769 + 1646574084 = 3113^2 + 40578^2 .

It is a cyclic number.

It is not a de Polignac number, because 1656264853 - 2¹ = 1656264851 is a prime.

It is a super-2 number, since 2×1656264853² = 5486426526566223218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1656264851) 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, 2645478 + ... + 2646103.

It is an arithmetic number, because the mean of its divisors is an integer number (415389187).

Almost surely, 2^1656264853 is an apocalyptic number.

It is an amenable number.

1656264853 is a deficient number, since it is larger than the sum of its proper divisors (5291895).

1656264853 is an equidigital number, since it uses as much as digits as its factorization.

1656264853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5291894.

The product of its digits is 1036800, while the sum is 46.

The square root of 1656264853 is about 40697.2339723476. The cubic root of 1656264853 is about 1183.1594095680.

The spelling of 1656264853 in words is "one billion, six hundred fifty-six million, two hundred sixty-four thousand, eight hundred fifty-three".