1662131326 has 8 divisors (see below), whose sum is σ = 2506972104. Its totient is φ = 826473960.

The previous prime is 1662131311. The next prime is 1662131329. The reversal of 1662131326 is 6231312661.

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 (1662131329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2295400 + ... + 2296123.

It is an arithmetic number, because the mean of its divisors is an integer number (313371513).

Almost surely, 2^1662131326 is an apocalyptic number.

1662131326 is a deficient number, since it is larger than the sum of its proper divisors (844840778).

1662131326 is a wasteful number, since it uses less digits than its factorization.

1662131326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4591706.

The product of its digits is 7776, while the sum is 31.

The square root of 1662131326 is about 40769.2448544243. The cubic root of 1662131326 is about 1184.5546763244.

Adding to 1662131326 its reverse (6231312661), we get a palindrome (7893443987).

The spelling of 1662131326 in words is "one billion, six hundred sixty-two million, one hundred thirty-one thousand, three hundred twenty-six".