1662540332 has 6 divisors (see below), whose sum is σ = 2909445588. Its totient is φ = 831270164.

The previous prime is 1662540329. The next prime is 1662540377. The reversal of 1662540332 is 2330452661.

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 as a sum of consecutive naturals, namely, 207817538 + ... + 207817545.

It is an arithmetic number, because the mean of its divisors is an integer number (484907598).

Almost surely, 2^1662540332 is an apocalyptic number.

It is an amenable number.

1662540332 is a deficient number, since it is larger than the sum of its proper divisors (1246905256).

1662540332 is a wasteful number, since it uses less digits than its factorization.

1662540332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415635087 (or 415635085 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 1662540332 is about 40774.2606554674. The cubic root of 1662540332 is about 1184.6518307485.

Adding to 1662540332 its reverse (2330452661), we get a palindrome (3992992993).

The spelling of 1662540332 in words is "one billion, six hundred sixty-two million, five hundred forty thousand, three hundred thirty-two".