1648817492 has 48 divisors (see below), whose sum is σ = 3536749440. Its totient is φ = 656802432.

The previous prime is 1648817479. The next prime is 1648817497. The reversal of 1648817492 is 2947188461.

It is a self number, because there is not a number n which added to its sum of digits gives 1648817492.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1648817497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1043 + ... + 57434.

It is an arithmetic number, because the mean of its divisors is an integer number (73682280).

Almost surely, 2^1648817492 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1648817492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1768374720).

1648817492 is an abundant number, since it is smaller than the sum of its proper divisors (1887931948).

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

1648817492 is a wasteful number, since it uses less digits than its factorization.

1648817492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58560 (or 58558 counting only the distinct ones).

The product of its digits is 774144, while the sum is 50.

The square root of 1648817492 is about 40605.6337470553. The cubic root of 1648817492 is about 1181.3833942766.

The spelling of 1648817492 in words is "one billion, six hundred forty-eight million, eight hundred seventeen thousand, four hundred ninety-two".