1655216416 has 48 divisors (see below), whose sum is σ = 3727563840. Its totient is φ = 708744960.

The previous prime is 1655216411. The next prime is 1655216417. The reversal of 1655216416 is 6146125561.

It is not an unprimeable number, because it can be changed into a prime (1655216411) by changing a digit.

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, 317511 + ... + 322681.

It is an arithmetic number, because the mean of its divisors is an integer number (77657580).

Almost surely, 2^1655216416 is an apocalyptic number.

1655216416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1655216416 is an abundant number, since it is smaller than the sum of its proper divisors (2072347424).

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

1655216416 is a wasteful number, since it uses less digits than its factorization.

1655216416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6617 (or 6609 counting only the distinct ones).

The product of its digits is 43200, while the sum is 37.

The square root of 1655216416 is about 40684.3509964212. The cubic root of 1655216416 is about 1182.9097051531.

The spelling of 1655216416 in words is "one billion, six hundred fifty-five million, two hundred sixteen thousand, four hundred sixteen".