1648407373 has 2 divisors, whose sum is σ = 1648407374. Its totient is φ = 1648407372.

The previous prime is 1648407287. The next prime is 1648407389. The reversal of 1648407373 is 3737048461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1584199204 + 64208169 = 39802^2 + 8013^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1648407373 is a prime.

It is a super-2 number, since 2×1648407373² = 5434493734721522258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1648407773) 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 as a sum of consecutive naturals, namely, 824203686 + 824203687.

It is an arithmetic number, because the mean of its divisors is an integer number (824203687).

Almost surely, 2^1648407373 is an apocalyptic number.

It is an amenable number.

1648407373 is a deficient number, since it is larger than the sum of its proper divisors (1).

1648407373 is an equidigital number, since it uses as much as digits as its factorization.

1648407373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 43.

The square root of 1648407373 is about 40600.5834071384. The cubic root of 1648407373 is about 1181.2854355970.

The spelling of 1648407373 in words is "one billion, six hundred forty-eight million, four hundred seven thousand, three hundred seventy-three".