1655206000 has 160 divisors (see below), whose sum is σ = 4605419520. Its totient is φ = 563616000.

The previous prime is 1655205991. The next prime is 1655206013. The reversal of 1655206000 is 6025561.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2673691 + ... + 2674309.

It is an arithmetic number, because the mean of its divisors is an integer number (28783872).

Almost surely, 2^1655206000 is an apocalyptic number.

1655206000 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 1655206000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2302709760).

1655206000 is an abundant number, since it is smaller than the sum of its proper divisors (2950213520).

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

1655206000 is a wasteful number, since it uses less digits than its factorization.

1655206000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840 (or 824 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1655206000 is about 40684.2229863125. Note that the first 3 decimals coincide. The cubic root of 1655206000 is about 1182.9072238636.

The spelling of 1655206000 in words is "one billion, six hundred fifty-five million, two hundred six thousand".