1948442473 has 4 divisors (see below), whose sum is σ = 2011295488. Its totient is φ = 1885589460.

The previous prime is 1948442449. The next prime is 1948442497. The reversal of 1948442473 is 3742448491.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3742448491 = 181 ⋅20676511.

It is an interprime number because it is at equal distance from previous prime (1948442449) and next prime (1948442497).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1948442473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1948442443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31426461 + ... + 31426522.

It is an arithmetic number, because the mean of its divisors is an integer number (502823872).

Almost surely, 2^1948442473 is an apocalyptic number.

It is an amenable number.

1948442473 is a deficient number, since it is larger than the sum of its proper divisors (62853015).

1948442473 is an equidigital number, since it uses as much as digits as its factorization.

1948442473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62853014.

The product of its digits is 774144, while the sum is 46.

The square root of 1948442473 is about 44141.1652881978. The cubic root of 1948442473 is about 1249.0002615382. Note that the first 3 decimals are identical.

The spelling of 1948442473 in words is "one billion, nine hundred forty-eight million, four hundred forty-two thousand, four hundred seventy-three".