1661235322 has 16 divisors (see below), whose sum is σ = 2630057760. Its totient is φ = 784784592.

The previous prime is 1661235313. The next prime is 1661235337. The reversal of 1661235322 is 2235321661.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 44428 + ... + 72775.

It is an arithmetic number, because the mean of its divisors is an integer number (164378610).

Almost surely, 2^1661235322 is an apocalyptic number.

1661235322 is a deficient number, since it is larger than the sum of its proper divisors (968822438).

1661235322 is a wasteful number, since it uses less digits than its factorization.

1661235322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117597.

The product of its digits is 12960, while the sum is 31.

The square root of 1661235322 is about 40758.2546485985. The cubic root of 1661235322 is about 1184.3417857051.

Adding to 1661235322 its reverse (2235321661), we get a palindrome (3896556983).

The spelling of 1661235322 in words is "one billion, six hundred sixty-one million, two hundred thirty-five thousand, three hundred twenty-two".