1648974684 has 48 divisors (see below), whose sum is σ = 4548902400. Its totient is φ = 454888896.

The previous prime is 1648974647. The next prime is 1648974703. The reversal of 1648974684 is 4864798461.

It is a happy number.

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, 336024 + ... + 340895.

It is an arithmetic number, because the mean of its divisors is an integer number (94768800).

Almost surely, 2^1648974684 is an apocalyptic number.

1648974684 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1648974684 is an abundant number, since it is smaller than the sum of its proper divisors (2899927716).

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

1648974684 is a wasteful number, since it uses less digits than its factorization.

1648974684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676962 (or 676960 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 57.

The square root of 1648974684 is about 40607.5692944062. The cubic root of 1648974684 is about 1181.4209359529.

The spelling of 1648974684 in words is "one billion, six hundred forty-eight million, nine hundred seventy-four thousand, six hundred eighty-four".