1648564855 has 16 divisors (see below), whose sum is σ = 2261600064. Its totient is φ = 1130088960.

The previous prime is 1648564837. The next prime is 1648564861. The reversal of 1648564855 is 5584658461.

It is not a de Polignac number, because 1648564855 - 2⁵ = 1648564823 is a prime.

It is a super-2 number, since 2×1648564855² = 5435532162282342050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156639 + ... + 166831.

It is an arithmetic number, because the mean of its divisors is an integer number (141350004).

Almost surely, 2^1648564855 is an apocalyptic number.

1648564855 is a deficient number, since it is larger than the sum of its proper divisors (613035209).

1648564855 is a wasteful number, since it uses less digits than its factorization.

1648564855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14826.

The product of its digits is 4608000, while the sum is 52.

The square root of 1648564855 is about 40602.5227664489. The cubic root of 1648564855 is about 1181.3230527686.

The spelling of 1648564855 in words is "one billion, six hundred forty-eight million, five hundred sixty-four thousand, eight hundred fifty-five".