1655138622 has 16 divisors (see below), whose sum is σ = 3340648080. Its totient is φ = 546651072.

The previous prime is 1655138599. The next prime is 1655138647. The reversal of 1655138622 is 2268315561.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1264743 + ... + 1266050.

It is an arithmetic number, because the mean of its divisors is an integer number (208790505).

Almost surely, 2^1655138622 is an apocalyptic number.

1655138622 is an abundant number, since it is smaller than the sum of its proper divisors (1685509458).

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

1655138622 is a wasteful number, since it uses less digits than its factorization.

1655138622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2530907.

The product of its digits is 86400, while the sum is 39.

The square root of 1655138622 is about 40683.3949173370. The cubic root of 1655138622 is about 1182.8911728898.

The spelling of 1655138622 in words is "one billion, six hundred fifty-five million, one hundred thirty-eight thousand, six hundred twenty-two".