1648161503 has 8 divisors (see below), whose sum is σ = 1660995840. Its totient is φ = 1635341400.

The previous prime is 1648161499. The next prime is 1648161523. The reversal of 1648161503 is 3051618461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1648161503 - 2² = 1648161499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1648161523) 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 in 7 ways as a sum of consecutive naturals, for example, 404828 + ... + 408878.

It is an arithmetic number, because the mean of its divisors is an integer number (207624480).

Almost surely, 2^1648161503 is an apocalyptic number.

1648161503 is a deficient number, since it is larger than the sum of its proper divisors (12834337).

1648161503 is a wasteful number, since it uses less digits than its factorization.

1648161503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7117.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 1648161503 is about 40597.5553820670. Note that the first 3 decimals coincide. The cubic root of 1648161503 is about 1181.2267007041.

Adding to 1648161503 its reverse (3051618461), we get a palindrome (4699779964).

The spelling of 1648161503 in words is "one billion, six hundred forty-eight million, one hundred sixty-one thousand, five hundred three".