1648425988 has 24 divisors (see below), whose sum is σ = 3154876704. Its totient is φ = 747408000.

The previous prime is 1648425979. The next prime is 1648426001. The reversal of 1648425988 is 8895248461.

It is a super-2 number, since 2×1648425988² = 5434616475827552288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29070 + ... + 64357.

It is an arithmetic number, because the mean of its divisors is an integer number (131453196).

Almost surely, 2^1648425988 is an apocalyptic number.

It is an amenable number.

1648425988 is a deficient number, since it is larger than the sum of its proper divisors (1506450716).

1648425988 is a wasteful number, since it uses less digits than its factorization.

1648425988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93843 (or 93841 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 55.

The square root of 1648425988 is about 40600.8126519655. The cubic root of 1648425988 is about 1181.2898822215.

The spelling of 1648425988 in words is "one billion, six hundred forty-eight million, four hundred twenty-five thousand, nine hundred eighty-eight".