1662242459 has 8 divisors (see below), whose sum is σ = 1731648240. Its totient is φ = 1594211200.

The previous prime is 1662242431. The next prime is 1662242521. The reversal of 1662242459 is 9542422661.

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

It is not a de Polignac number, because 1662242459 - 2¹² = 1662238363 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1662242059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341162 + ... + 345999.

It is an arithmetic number, because the mean of its divisors is an integer number (216456030).

Almost surely, 2^1662242459 is an apocalyptic number.

1662242459 is a deficient number, since it is larger than the sum of its proper divisors (69405781).

1662242459 is an equidigital number, since it uses as much as digits as its factorization.

1662242459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687261.

The product of its digits is 207360, while the sum is 41.

The square root of 1662242459 is about 40770.6077830586. The cubic root of 1662242459 is about 1184.5810762001.

The spelling of 1662242459 in words is "one billion, six hundred sixty-two million, two hundred forty-two thousand, four hundred fifty-nine".