1648763320 has 32 divisors (see below), whose sum is σ = 3747970800. Its totient is φ = 652704768.

The previous prime is 1648763317. The next prime is 1648763383. The reversal of 1648763320 is 233678461.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208590 + ... + 216349.

Almost surely, 2^1648763320 is an apocalyptic number.

1648763320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1648763320 is an abundant number, since it is smaller than the sum of its proper divisors (2099207480).

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

1648763320 is a wasteful number, since it uses less digits than its factorization.

1648763320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425047 (or 425043 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 1648763320 is about 40604.9666912805. The cubic root of 1648763320 is about 1181.3704559936.

The spelling of 1648763320 in words is "one billion, six hundred forty-eight million, seven hundred sixty-three thousand, three hundred twenty".