1655605500 has 48 divisors (see below), whose sum is σ = 4821127584. Its totient is φ = 441494400.

The previous prime is 1655605493. The next prime is 1655605513. The reversal of 1655605500 is 55065561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 550369 + ... + 553368.

It is an arithmetic number, because the mean of its divisors is an integer number (100440158).

Almost surely, 2^1655605500 is an apocalyptic number.

1655605500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1655605500 is an abundant number, since it is smaller than the sum of its proper divisors (3165522084).

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

1655605500 is a wasteful number, since it uses less digits than its factorization.

1655605500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103759 (or 1103747 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 1655605500 is about 40689.1324557307. The cubic root of 1655605500 is about 1183.0023849133.

The spelling of 1655605500 in words is "one billion, six hundred fifty-five million, six hundred five thousand, five hundred".