1648881827 has 4 divisors (see below), whose sum is σ = 1687227960. Its totient is φ = 1610535696.

The previous prime is 1648881823. The next prime is 1648881841. The reversal of 1648881827 is 7281888461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1648881827 - 2² = 1648881823 is a prime.

It is a super-2 number, since 2×1648881827² = 5437622558821715858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1648881821) 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, 19173002 + ... + 19173087.

It is an arithmetic number, because the mean of its divisors is an integer number (421806990).

Almost surely, 2^1648881827 is an apocalyptic number.

1648881827 is a deficient number, since it is larger than the sum of its proper divisors (38346133).

1648881827 is an equidigital number, since it uses as much as digits as its factorization.

1648881827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38346132.

The product of its digits is 1376256, while the sum is 53.

The square root of 1648881827 is about 40606.4259323571. The cubic root of 1648881827 is about 1181.3987594929.

The spelling of 1648881827 in words is "one billion, six hundred forty-eight million, eight hundred eighty-one thousand, eight hundred twenty-seven".