1648354042 has 4 divisors (see below), whose sum is σ = 2472531066. Its totient is φ = 824177020.

The previous prime is 1648354013. The next prime is 1648354049. The reversal of 1648354042 is 2404538461.

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., 1050991561 + 597362481 = 32419^2 + 24441^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1648353992 and 1648354010.

It is not an unprimeable number, because it can be changed into a prime (1648354049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412088509 + ... + 412088512.

Almost surely, 2^1648354042 is an apocalyptic number.

1648354042 is a deficient number, since it is larger than the sum of its proper divisors (824177024).

1648354042 is an equidigital number, since it uses as much as digits as its factorization.

1648354042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824177023.

The product of its (nonzero) digits is 92160, while the sum is 37.

The square root of 1648354042 is about 40599.9266255495. The cubic root of 1648354042 is about 1181.2726960655.

The spelling of 1648354042 in words is "one billion, six hundred forty-eight million, three hundred fifty-four thousand, forty-two".