1623166201 has 8 divisors (see below), whose sum is σ = 1628704584. Its totient is φ = 1617638400.

The previous prime is 1623166183. The next prime is 1623166243. The reversal of 1623166201 is 1026613261.

It can be written as a sum of positive squares in 4 ways, for example, as 1330790400 + 292375801 = 36480^2 + 17099^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1623166201 - 2¹⁹ = 1622641913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1623166201.

It is not an unprimeable number, because it can be changed into a prime (1623166901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402471 + ... + 406483.

It is an arithmetic number, because the mean of its divisors is an integer number (203588073).

Almost surely, 2^1623166201 is an apocalyptic number.

It is an amenable number.

1623166201 is a deficient number, since it is larger than the sum of its proper divisors (5538383).

1623166201 is an equidigital number, since it uses as much as digits as its factorization.

1623166201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5291.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1623166201 is about 40288.5368436234. The cubic root of 1623166201 is about 1175.2249337898.

Adding to 1623166201 its reverse (1026613261), we get a palindrome (2649779462).

The spelling of 1623166201 in words is "one billion, six hundred twenty-three million, one hundred sixty-six thousand, two hundred one".