1648169340 has 48 divisors (see below), whose sum is σ = 4617164160. Its totient is φ = 439293760.

The previous prime is 1648169279. The next prime is 1648169377. The reversal of 1648169340 is 439618461.

It is a junction number, because it is equal to n+sod(n) for n = 1648169292 and 1648169301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141955 + ... + 153125.

It is an arithmetic number, because the mean of its divisors is an integer number (96190920).

Almost surely, 2^1648169340 is an apocalyptic number.

1648169340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1648169340 is an abundant number, since it is smaller than the sum of its proper divisors (2968994820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1648169340 is a wasteful number, since it uses less digits than its factorization.

1648169340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13642 (or 13640 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 1648169340 is about 40597.6519025423. The cubic root of 1648169340 is about 1181.2285729435.

The spelling of 1648169340 in words is "one billion, six hundred forty-eight million, one hundred sixty-nine thousand, three hundred forty".