1648434855 has 16 divisors (see below), whose sum is σ = 2639871360. Its totient is φ = 878373408.

The previous prime is 1648434833. The next prime is 1648434857. The reversal of 1648434855 is 5584348461.

It is not a de Polignac number, because 1648434855 - 2¹⁵ = 1648402087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1648434857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32085 + ... + 65774.

It is an arithmetic number, because the mean of its divisors is an integer number (164991960).

Almost surely, 2^1648434855 is an apocalyptic number.

1648434855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1648434855 is a deficient number, since it is larger than the sum of its proper divisors (991436505).

1648434855 is a wasteful number, since it uses less digits than its factorization.

1648434855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98990.

The product of its digits is 1843200, while the sum is 48.

The square root of 1648434855 is about 40600.9218491403. The cubic root of 1648434855 is about 1181.2920002983.

The spelling of 1648434855 in words is "one billion, six hundred forty-eight million, four hundred thirty-four thousand, eight hundred fifty-five".