1648349377 has 4 divisors (see below), whose sum is σ = 1655611056. Its totient is φ = 1641087700.

The previous prime is 1648349369. The next prime is 1648349429. The reversal of 1648349377 is 7739438461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1648349377 - 2³ = 1648349369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1648349077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3630499 + ... + 3630952.

It is an arithmetic number, because the mean of its divisors is an integer number (413902764).

Almost surely, 2^1648349377 is an apocalyptic number.

It is an amenable number.

1648349377 is a deficient number, since it is larger than the sum of its proper divisors (7261679).

1648349377 is an equidigital number, since it uses as much as digits as its factorization.

1648349377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7261678.

The product of its digits is 3048192, while the sum is 52.

The square root of 1648349377 is about 40599.8691746661. The cubic root of 1648349377 is about 1181.2715816928.

The spelling of 1648349377 in words is "one billion, six hundred forty-eight million, three hundred forty-nine thousand, three hundred seventy-seven".