1648675280 has 40 divisors (see below), whose sum is σ = 4380767232. Its totient is φ = 565259904.

The previous prime is 1648675279. The next prime is 1648675307. The reversal of 1648675280 is 825768461.

It is a tau number, because it is divible by the number of its divisors (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, 1471472 + ... + 1472591.

Almost surely, 2^1648675280 is an apocalyptic number.

1648675280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1648675280 is an abundant number, since it is smaller than the sum of its proper divisors (2732091952).

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

1648675280 is a wasteful number, since it uses less digits than its factorization.

1648675280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2944083 (or 2944077 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 1648675280 is about 40603.8825729757. The cubic root of 1648675280 is about 1181.3494281713.

The spelling of 1648675280 in words is "one billion, six hundred forty-eight million, six hundred seventy-five thousand, two hundred eighty".