1655500000 has 336 divisors, whose sum is σ = 5197433472. Its totient is φ = 504000000.

The previous prime is 1655499983. The next prime is 1655500013. The reversal of 1655500000 is 55561.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 38499979 + ... + 38500021.

It is an arithmetic number, because the mean of its divisors is an integer number (15468552).

Almost surely, 2^1655500000 is an apocalyptic number.

1655500000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1655500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2598716736).

1655500000 is an abundant number, since it is smaller than the sum of its proper divisors (3541933472).

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

1655500000 is an frugal number, since it uses more digits than its factorization.

1655500000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101 (or 68 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 1655500000 is about 40687.8360201179. The cubic root of 1655500000 is about 1182.9772562614.

Adding to 1655500000 its reverse (55561), we get a palindrome (1655555561).

The spelling of 1655500000 in words is "one billion, six hundred fifty-five million, five hundred thousand".