1611656112 has 120 divisors (see below), whose sum is σ = 4652393200. Its totient is φ = 480268800.

The previous prime is 1611656099. The next prime is 1611656119. The reversal of 1611656112 is 2116561161.

It is a self number, because there is not a number n which added to its sum of digits gives 1611656112.

It is not an unprimeable number, because it can be changed into a prime (1611656119) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 352014 + ... + 356562.

Almost surely, 2^1611656112 is an apocalyptic number.

1611656112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1611656112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2326196600).

1611656112 is an abundant number, since it is smaller than the sum of its proper divisors (3040737088).

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

1611656112 is a wasteful number, since it uses less digits than its factorization.

1611656112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4643 (or 4626 counting only the distinct ones).

The product of its digits is 2160, while the sum is 30.

The square root of 1611656112 is about 40145.4370009843. The cubic root of 1611656112 is about 1172.4404491769.

The spelling of 1611656112 in words is "one billion, six hundred eleven million, six hundred fifty-six thousand, one hundred twelve".