1661044342 has 8 divisors (see below), whose sum is σ = 2491856136. Its totient is φ = 830425632.

The previous prime is 1661044321. The next prime is 1661044349. The reversal of 1661044342 is 2434401661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1661044349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24403 + ... + 62590.

It is an arithmetic number, because the mean of its divisors is an integer number (311482017).

Almost surely, 2^1661044342 is an apocalyptic number.

1661044342 is a deficient number, since it is larger than the sum of its proper divisors (830811794).

1661044342 is an equidigital number, since it uses as much as digits as its factorization.

1661044342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96542.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 1661044342 is about 40755.9117429607. The cubic root of 1661044342 is about 1184.2963989460.

The spelling of 1661044342 in words is "one billion, six hundred sixty-one million, forty-four thousand, three hundred forty-two".