1656482881 has 4 divisors (see below), whose sum is σ = 1657411632. Its totient is φ = 1655554132.

The previous prime is 1656482857. The next prime is 1656482887. The reversal of 1656482881 is 1882846561.

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 a cyclic number.

It is not a de Polignac number, because 1656482881 - 2²⁵ = 1622928449 is a prime.

It is a super-2 number, since 2×1656482881² = 5487871070092120322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1656482887) 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, 461695 + ... + 465268.

It is an arithmetic number, because the mean of its divisors is an integer number (414352908).

Almost surely, 2^1656482881 is an apocalyptic number.

It is an amenable number.

1656482881 is a deficient number, since it is larger than the sum of its proper divisors (928751).

1656482881 is an equidigital number, since it uses as much as digits as its factorization.

1656482881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928750.

The product of its digits is 737280, while the sum is 49.

The square root of 1656482881 is about 40699.9125429036. The cubic root of 1656482881 is about 1183.2113236809.

The spelling of 1656482881 in words is "one billion, six hundred fifty-six million, four hundred eighty-two thousand, eight hundred eighty-one".