1622051601 has 4 divisors (see below), whose sum is σ = 2162735472. Its totient is φ = 1081367732.

The previous prime is 1622051593. The next prime is 1622051663. The reversal of 1622051601 is 1061502261.

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: 1061502261 = 3 ⋅353834087.

It is a cyclic number.

It is not a de Polignac number, because 1622051601 - 2³ = 1622051593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1622051681) 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, 270341931 + ... + 270341936.

It is an arithmetic number, because the mean of its divisors is an integer number (540683868).

Almost surely, 2^1622051601 is an apocalyptic number.

It is an amenable number.

1622051601 is a deficient number, since it is larger than the sum of its proper divisors (540683871).

1622051601 is an equidigital number, since it uses as much as digits as its factorization.

1622051601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540683870.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1622051601 is about 40274.7017493612. The cubic root of 1622051601 is about 1174.9558700191.

Adding to 1622051601 its reverse (1061502261), we get a palindrome (2683553862).

The spelling of 1622051601 in words is "one billion, six hundred twenty-two million, fifty-one thousand, six hundred one".