1606423201 has 4 divisors (see below), whose sum is σ = 1676267712. Its totient is φ = 1536578692.

The previous prime is 1606423171. The next prime is 1606423213. The reversal of 1606423201 is 1023246061.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1023246061 = 41 ⋅24957221.

It is a cyclic number.

It is not a de Polignac number, because 1606423201 - 2¹⁵ = 1606390433 is a prime.

It is a super-2 number, since 2×1606423201² = 5161191001422172802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1606423241) 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, 34922221 + ... + 34922266.

It is an arithmetic number, because the mean of its divisors is an integer number (419066928).

Almost surely, 2^1606423201 is an apocalyptic number.

It is an amenable number.

1606423201 is a deficient number, since it is larger than the sum of its proper divisors (69844511).

1606423201 is an equidigital number, since it uses as much as digits as its factorization.

1606423201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69844510.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1606423201 is about 40080.2095927654. The cubic root of 1606423201 is about 1171.1701350110.

Adding to 1606423201 its reverse (1023246061), we get a palindrome (2629669262).

The spelling of 1606423201 in words is "one billion, six hundred six million, four hundred twenty-three thousand, two hundred one".