1661350096 has 60 divisors (see below), whose sum is σ = 3778941540. Its totient is φ = 705438720.

The previous prime is 1661350051. The next prime is 1661350241. The reversal of 1661350096 is 6900531661.

It can be written as a sum of positive squares in 2 ways, for example, as 763748496 + 897601600 = 27636^2 + 29960^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75736 + ... + 95176.

It is an arithmetic number, because the mean of its divisors is an integer number (62982359).

Almost surely, 2^1661350096 is an apocalyptic number.

1661350096 is a gapful number since it is divisible by the number (16) 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 1661350096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1889470770).

1661350096 is an abundant number, since it is smaller than the sum of its proper divisors (2117591444).

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

1661350096 is a wasteful number, since it uses less digits than its factorization.

1661350096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19572 (or 19559 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 1661350096 is about 40759.6626090060. The cubic root of 1661350096 is about 1184.3690602905.

The spelling of 1661350096 in words is "one billion, six hundred sixty-one million, three hundred fifty thousand, ninety-six".