1655505445 has 16 divisors (see below), whose sum is σ = 2168083008. Its totient is φ = 1203517440.

The previous prime is 1655505419. The next prime is 1655505463. The reversal of 1655505445 is 5445055561.

It is not a de Polignac number, because 1655505445 - 2⁷ = 1655505317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1655505398 and 1655505407.

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, 185782 + ... + 194488.

It is an arithmetic number, because the mean of its divisors is an integer number (135505188).

Almost surely, 2^1655505445 is an apocalyptic number.

It is an amenable number.

1655505445 is a deficient number, since it is larger than the sum of its proper divisors (512577563).

1655505445 is a wasteful number, since it uses less digits than its factorization.

1655505445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12180.

The product of its (nonzero) digits is 300000, while the sum is 40.

The square root of 1655505445 is about 40687.9029319526. The cubic root of 1655505445 is about 1182.9785532118.

The spelling of 1655505445 in words is "one billion, six hundred fifty-five million, five hundred five thousand, four hundred forty-five".