1616551662 has 64 divisors (see below), whose sum is σ = 3582931968. Its totient is φ = 482160000.

The previous prime is 1616551661. The next prime is 1616551687. The reversal of 1616551662 is 2661556161.

It is a super-2 number, since 2×1616551662² = 5226478551829924488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1616551662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616551661) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1312587 + ... + 1313817.

It is an arithmetic number, because the mean of its divisors is an integer number (55983312).

Almost surely, 2^1616551662 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1616551662, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1791465984).

1616551662 is an abundant number, since it is smaller than the sum of its proper divisors (1966380306).

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

1616551662 is a wasteful number, since it uses less digits than its factorization.

1616551662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1545.

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

The square root of 1616551662 is about 40206.3634515732. The cubic root of 1616551662 is about 1173.6263802049.

The spelling of 1616551662 in words is "one billion, six hundred sixteen million, five hundred fifty-one thousand, six hundred sixty-two".