1916215648 has 24 divisors (see below), whose sum is σ = 3894246720. Its totient is φ = 927200640.

The previous prime is 1916215627. The next prime is 1916215661. The reversal of 1916215648 is 8465126191.

It is a super-3 number, since 3×1916215648³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 964843 + ... + 966826.

It is an arithmetic number, because the mean of its divisors is an integer number (162260280).

Almost surely, 2^1916215648 is an apocalyptic number.

It is an amenable number.

1916215648 is an abundant number, since it is smaller than the sum of its proper divisors (1978031072).

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

1916215648 is a wasteful number, since it uses less digits than its factorization.

1916215648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1931710 (or 1931702 counting only the distinct ones).

The product of its digits is 103680, while the sum is 43.

The square root of 1916215648 is about 43774.6004893249. The cubic root of 1916215648 is about 1242.0758776832.

The spelling of 1916215648 in words is "one billion, nine hundred sixteen million, two hundred fifteen thousand, six hundred forty-eight".