1659422713 has 4 divisors (see below), whose sum is σ = 1787070628. Its totient is φ = 1531774800.

The previous prime is 1659422693. The next prime is 1659422753. The reversal of 1659422713 is 3172249561.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 858079849 + 801342864 = 29293^2 + 28308^2 .

It is a cyclic number.

It is not a de Polignac number, because 1659422713 - 2²¹ = 1657325561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1659422753) 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, 63823938 + ... + 63823963.

It is an arithmetic number, because the mean of its divisors is an integer number (446767657).

Almost surely, 2^1659422713 is an apocalyptic number.

1659422713 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1659422713 is a deficient number, since it is larger than the sum of its proper divisors (127647915).

1659422713 is a wasteful number, since it uses less digits than its factorization.

1659422713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127647914.

The product of its digits is 90720, while the sum is 40.

The square root of 1659422713 is about 40736.0124828143. The cubic root of 1659422713 is about 1183.9108754838.

The spelling of 1659422713 in words is "one billion, six hundred fifty-nine million, four hundred twenty-two thousand, seven hundred thirteen".