1948648986 has 24 divisors (see below), whose sum is σ = 4301736660. Its totient is φ = 637293696.

The previous prime is 1948648979. The next prime is 1948649009. The reversal of 1948648986 is 6898468491.

It can be written as a sum of positive squares in 2 ways, for example, as 1904013225 + 44635761 = 43635^2 + 6681^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1020351 + ... + 1022258.

Almost surely, 2^1948648986 is an apocalyptic number.

1948648986 is an abundant number, since it is smaller than the sum of its proper divisors (2353087674).

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

1948648986 is a wasteful number, since it uses less digits than its factorization.

1948648986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042670 (or 2042667 counting only the distinct ones).

The product of its digits is 23887872, while the sum is 63.

The square root of 1948648986 is about 44143.5044598863. The cubic root of 1948648986 is about 1249.0443866420.

The spelling of 1948648986 in words is "one billion, nine hundred forty-eight million, six hundred forty-eight thousand, nine hundred eighty-six".