1948561592857 has 12 divisors (see below), whose sum is σ = 2143884915648. Its totient is φ = 1769701359800.

The previous prime is 1948561592801. The next prime is 1948561592863. The reversal of 1948561592857 is 7582951658491.

It is not a de Polignac number, because 1948561592857 - 2¹¹ = 1948561590809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1948561512857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7685053 + ... + 7934554.

It is an arithmetic number, because the mean of its divisors is an integer number (178657076304).

Almost surely, 2^{1948561592857} is an apocalyptic number.

It is an amenable number.

1948561592857 is a deficient number, since it is larger than the sum of its proper divisors (195323322791).

1948561592857 is a wasteful number, since it uses less digits than its factorization.

1948561592857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15620660 (or 15620649 counting only the distinct ones).

The product of its digits is 217728000, while the sum is 70.

The spelling of 1948561592857 in words is "one trillion, nine hundred forty-eight billion, five hundred sixty-one million, five hundred ninety-two thousand, eight hundred fifty-seven".