1948723058857 has 8 divisors (see below), whose sum is σ = 1957355857800. Its totient is φ = 1940107683840.

The previous prime is 1948723058851. The next prime is 1948723058927. The reversal of 1948723058857 is 7588503278491.

It can be written as a sum of positive squares in 4 ways, for example, as 1362983865961 + 585739192896 = 1167469^2 + 765336^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1948723058857 is a prime.

It is a super-2 number, since 2×1948723058857² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1948723058792 and 1948723058801.

It is not an unprimeable number, because it can be changed into a prime (1948723058851) 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, 4131778 + ... + 4579195.

It is an arithmetic number, because the mean of its divisors is an integer number (244669482225).

Almost surely, 2^{1948723058857} is an apocalyptic number.

It is an amenable number.

1948723058857 is a deficient number, since it is larger than the sum of its proper divisors (8632798943).

1948723058857 is an equidigital number, since it uses as much as digits as its factorization.

1948723058857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8711963.

The product of its (nonzero) digits is 135475200, while the sum is 67.

The spelling of 1948723058857 in words is "one trillion, nine hundred forty-eight billion, seven hundred twenty-three million, fifty-eight thousand, eight hundred fifty-seven".