1655661126 has 64 divisors (see below), whose sum is σ = 3930647040. Its totient is φ = 455051520.

The previous prime is 1655661079. The next prime is 1655661143. The reversal of 1655661126 is 6211665561.

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, 132321 + ... + 144291.

It is an arithmetic number, because the mean of its divisors is an integer number (61416360).

Almost surely, 2^1655661126 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1655661126, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1965323520).

1655661126 is an abundant number, since it is smaller than the sum of its proper divisors (2274985914).

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

1655661126 is a wasteful number, since it uses less digits than its factorization.

1655661126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12109.

The product of its digits is 64800, while the sum is 39.

The square root of 1655661126 is about 40689.8159986009. The cubic root of 1655661126 is about 1183.0156338331.

The spelling of 1655661126 in words is "one billion, six hundred fifty-five million, six hundred sixty-one thousand, one hundred twenty-six".