1948944857 has 8 divisors (see below), whose sum is σ = 1999310016. Its totient is φ = 1898808912.

The previous prime is 1948944853. The next prime is 1948944869. The reversal of 1948944857 is 7584498491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1948944857 - 2² = 1948944853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1948944796 and 1948944805.

It is not an unprimeable number, because it can be changed into a prime (1948944853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40013 + ... + 74154.

It is an arithmetic number, because the mean of its divisors is an integer number (249913752).

Almost surely, 2^1948944857 is an apocalyptic number.

It is an amenable number.

1948944857 is a deficient number, since it is larger than the sum of its proper divisors (50365159).

1948944857 is a wasteful number, since it uses less digits than its factorization.

1948944857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114607.

The product of its digits is 11612160, while the sum is 59.

The square root of 1948944857 is about 44146.8555731889. The cubic root of 1948944857 is about 1249.1075992083.

It can be divided in two parts, 19489 and 44857, that added together give a palindrome (64346).

The spelling of 1948944857 in words is "one billion, nine hundred forty-eight million, nine hundred forty-four thousand, eight hundred fifty-seven".