1655555622 has 16 divisors (see below), whose sum is σ = 3784127232. Its totient is φ = 473015880.

The previous prime is 1655555621. The next prime is 1655555653. The reversal of 1655555622 is 2265555561.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 39417991 = 1655555622 / (1 + 6 + 5 + 5 + 5 + 5 + 5 + 6 + 2 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1655555621) 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, 19708954 + ... + 19709037.

It is an arithmetic number, because the mean of its divisors is an integer number (236507952).

Almost surely, 2^1655555622 is an apocalyptic number.

1655555622 is an abundant number, since it is smaller than the sum of its proper divisors (2128571610).

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

1655555622 is a wasteful number, since it uses less digits than its factorization.

1655555622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39418003.

The product of its digits is 450000, while the sum is 42.

The square root of 1655555622 is about 40688.5195356135. The cubic root of 1655555622 is about 1182.9905047914.

The spelling of 1655555622 in words is "one billion, six hundred fifty-five million, five hundred fifty-five thousand, six hundred twenty-two".