1948721705 has 16 divisors (see below), whose sum is σ = 2682407424. Its totient is φ = 1331328960.

The previous prime is 1948721701. The next prime is 1948721707. The reversal of 1948721705 is 5071278491.

It is not a de Polignac number, because 1948721705 - 2² = 1948721701 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1948721701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93242 + ... + 112211.

It is an arithmetic number, because the mean of its divisors is an integer number (167650464).

Almost surely, 2^1948721705 is an apocalyptic number.

It is an amenable number.

1948721705 is a deficient number, since it is larger than the sum of its proper divisors (733685719).

1948721705 is a wasteful number, since it uses less digits than its factorization.

1948721705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205736.

The product of its (nonzero) digits is 141120, while the sum is 44.

The square root of 1948721705 is about 44144.3281181173. The cubic root of 1948721705 is about 1249.0599235823.

The spelling of 1948721705 in words is "one billion, nine hundred forty-eight million, seven hundred twenty-one thousand, seven hundred five".