1655216328 has 32 divisors (see below), whose sum is σ = 4139444160. Its totient is φ = 551551680.

The previous prime is 1655216323. The next prime is 1655216347. The reversal of 1655216328 is 8236125561.

It is not an unprimeable number, because it can be changed into a prime (1655216323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73101 + ... + 93027.

It is an arithmetic number, because the mean of its divisors is an integer number (129357630).

Almost surely, 2^1655216328 is an apocalyptic number.

It is an amenable number.

1655216328 is an abundant number, since it is smaller than the sum of its proper divisors (2484227832).

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

1655216328 is a wasteful number, since it uses less digits than its factorization.

1655216328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23397 (or 23393 counting only the distinct ones).

The product of its digits is 86400, while the sum is 39.

The square root of 1655216328 is about 40684.3499149243. The cubic root of 1655216328 is about 1182.9096841899.

The spelling of 1655216328 in words is "one billion, six hundred fifty-five million, two hundred sixteen thousand, three hundred twenty-eight".