1948378 has 4 divisors (see below), whose sum is σ = 2922570. Its totient is φ = 974188.

The previous prime is 1948369. The next prime is 1948411. The reversal of 1948378 is 8738491.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1841449 + 106929 = 1357^2 + 327^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1948378.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487093 + ... + 487096.

2^1948378 is an apocalyptic number.

1948378 is a deficient number, since it is larger than the sum of its proper divisors (974192).

1948378 is an equidigital number, since it uses as much as digits as its factorization.

1948378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974191.

The product of its digits is 48384, while the sum is 40.

The square root of 1948378 is about 1395.8431143936. The cubic root of 1948378 is about 124.8986485119.

The spelling of 1948378 in words is "one million, nine hundred forty-eight thousand, three hundred seventy-eight".