2048171639 has 4 divisors (see below), whose sum is σ = 2052343560. Its totient is φ = 2043999720.

The previous prime is 2048171623. The next prime is 2048171647. The reversal of 2048171639 is 9361718402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9361718402 = 2 ⋅4680859201.

It is a cyclic number.

It is not a de Polignac number, because 2048171639 - 2⁴ = 2048171623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2048171596 and 2048171605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2048171539) 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, 2085224 + ... + 2086205.

It is an arithmetic number, because the mean of its divisors is an integer number (513085890).

Almost surely, 2^2048171639 is an apocalyptic number.

2048171639 is a deficient number, since it is larger than the sum of its proper divisors (4171921).

2048171639 is an equidigital number, since it uses as much as digits as its factorization.

2048171639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4171920.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 2048171639 is about 45256.7303171584. The cubic root of 2048171639 is about 1269.9563171368.

The spelling of 2048171639 in words is "two billion, forty-eight million, one hundred seventy-one thousand, six hundred thirty-nine".