1948939 has 4 divisors (see below), whose sum is σ = 2011840. Its totient is φ = 1886040.

The previous prime is 1948937. The next prime is 1948981. The reversal of 1948939 is 9398491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9398491 = 157 ⋅59863.

It is not a de Polignac number, because 1948939 - 2¹ = 1948937 is a prime.

It is a Duffinian number.

1948939 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1948895 and 1948904.

It is not an unprimeable number, because it can be changed into a prime (1948937) 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 3 ways as a sum of consecutive naturals, for example, 31404 + ... + 31465.

It is an arithmetic number, because the mean of its divisors is an integer number (502960).

2^1948939 is an apocalyptic number.

1948939 is a deficient number, since it is larger than the sum of its proper divisors (62901).

1948939 is an equidigital number, since it uses as much as digits as its factorization.

1948939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62900.

The product of its digits is 69984, while the sum is 43.

The square root of 1948939 is about 1396.0440537462. The cubic root of 1948939 is about 124.9106347928.

The spelling of 1948939 in words is "one million, nine hundred forty-eight thousand, nine hundred thirty-nine".