1662242461 has 6 divisors (see below), whose sum is σ = 1827093086. Its totient is φ = 1511129400.

The previous prime is 1662242431. The next prime is 1662242521. The reversal of 1662242461 is 1642422661.

It can be written as a sum of positive squares in only one way, i.e., 1637739961 + 24502500 = 40469^2 + 4950^2 .

It is not a de Polignac number, because 1662242461 - 2¹¹ = 1662240413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1662242431) 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 5 ways as a sum of consecutive naturals, for example, 6868650 + ... + 6868891.

Almost surely, 2^1662242461 is an apocalyptic number.

1662242461 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1662242461 is a deficient number, since it is larger than the sum of its proper divisors (164850625).

1662242461 is a wasteful number, since it uses less digits than its factorization.

1662242461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13737563 (or 13737552 counting only the distinct ones).

The product of its digits is 27648, while the sum is 34.

The square root of 1662242461 is about 40770.6078075861. The cubic root of 1662242461 is about 1184.5810766752.

The spelling of 1662242461 in words is "one billion, six hundred sixty-two million, two hundred forty-two thousand, four hundred sixty-one".