1662456113 has 4 divisors (see below), whose sum is σ = 1677168228. Its totient is φ = 1647744000.

The previous prime is 1662456101. The next prime is 1662456121. The reversal of 1662456113 is 3116542661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3116542661 = 3511 ⋅887651.

It can be written as a sum of positive squares in 2 ways, for example, as 472758049 + 1189698064 = 21743^2 + 34492^2 .

It is a cyclic number.

It is not a de Polignac number, because 1662456113 - 2¹⁰ = 1662455089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1662456143) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7355888 + ... + 7356113.

It is an arithmetic number, because the mean of its divisors is an integer number (419292057).

Almost surely, 2^1662456113 is an apocalyptic number.

It is an amenable number.

1662456113 is a deficient number, since it is larger than the sum of its proper divisors (14712115).

1662456113 is a wasteful number, since it uses less digits than its factorization.

1662456113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14712114.

The product of its digits is 25920, while the sum is 35.

The square root of 1662456113 is about 40773.2278952746. The cubic root of 1662456113 is about 1184.6318268474.

Adding to 1662456113 its reverse (3116542661), we get a palindrome (4778998774).

The spelling of 1662456113 in words is "one billion, six hundred sixty-two million, four hundred fifty-six thousand, one hundred thirteen".