1948396445 has 4 divisors (see below), whose sum is σ = 2338075740. Its totient is φ = 1558717152.

The previous prime is 1948396423. The next prime is 1948396453. The reversal of 1948396445 is 5446938491.

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

It can be written as a sum of positive squares in 2 ways, for example, as 547466404 + 1400930041 = 23398^2 + 37429^2 .

It is a cyclic number.

It is not a de Polignac number, because 1948396445 - 2⁸ = 1948396189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194839640 + ... + 194839649.

It is an arithmetic number, because the mean of its divisors is an integer number (584518935).

Almost surely, 2^1948396445 is an apocalyptic number.

It is an amenable number.

1948396445 is a deficient number, since it is larger than the sum of its proper divisors (389679295).

1948396445 is an equidigital number, since it uses as much as digits as its factorization.

1948396445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389679294.

The product of its digits is 3732480, while the sum is 53.

The square root of 1948396445 is about 44140.6439123853. The cubic root of 1948396445 is about 1248.9904264285.

The spelling of 1948396445 in words is "one billion, nine hundred forty-eight million, three hundred ninety-six thousand, four hundred forty-five".