1648886040 has 96 divisors (see below), whose sum is σ = 5432375520. Its totient is φ = 433672704.

The previous prime is 1648886033. The next prime is 1648886081. The reversal of 1648886040 is 406888461.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5092 + ... + 57651.

It is an arithmetic number, because the mean of its divisors is an integer number (56587245).

Almost surely, 2^1648886040 is an apocalyptic number.

1648886040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1648886040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2716187760).

1648886040 is an abundant number, since it is smaller than the sum of its proper divisors (3783489480).

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

1648886040 is a wasteful number, since it uses less digits than its factorization.

1648886040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62833 (or 62826 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 45.

The square root of 1648886040 is about 40606.4778083497. The cubic root of 1648886040 is about 1181.3997656755.

The spelling of 1648886040 in words is "one billion, six hundred forty-eight million, eight hundred eighty-six thousand, forty".