1648974999 has 24 divisors (see below), whose sum is σ = 2581083120. Its totient is φ = 933617664.

The previous prime is 1648974991. The next prime is 1648975039. The reversal of 1648974999 is 9994798461.

It is not a de Polignac number, because 1648974999 - 2³ = 1648974991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1648974991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35434 + ... + 67479.

It is an arithmetic number, because the mean of its divisors is an integer number (107545130).

Almost surely, 2^1648974999 is an apocalyptic number.

1648974999 is a deficient number, since it is larger than the sum of its proper divisors (932108121).

1648974999 is a wasteful number, since it uses less digits than its factorization.

1648974999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103039 (or 103032 counting only the distinct ones).

The product of its digits is 35271936, while the sum is 66.

The square root of 1648974999 is about 40607.5731729932. The cubic root of 1648974999 is about 1181.4210111809.

The spelling of 1648974999 in words is "one billion, six hundred forty-eight million, nine hundred seventy-four thousand, nine hundred ninety-nine".