1626220105 has 8 divisors (see below), whose sum is σ = 1999061064. Its totient is φ = 1269244800.

The previous prime is 1626220097. The next prime is 1626220111. The reversal of 1626220105 is 5010226261.

It can be written as a sum of positive squares in 4 ways, for example, as 119771136 + 1506448969 = 10944^2 + 38813^2 .

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

It is not a de Polignac number, because 1626220105 - 2³ = 1626220097 is a prime.

It is a super-2 number, since 2×1626220105² = 5289183659812422050, which contains 22 as substring.

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 1626220105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3966186 + ... + 3966595.

It is an arithmetic number, because the mean of its divisors is an integer number (249882633).

Almost surely, 2^1626220105 is an apocalyptic number.

It is an amenable number.

1626220105 is a deficient number, since it is larger than the sum of its proper divisors (372840959).

1626220105 is an equidigital number, since it uses as much as digits as its factorization.

1626220105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7932827.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1626220105 is about 40326.4194418498. The cubic root of 1626220105 is about 1175.9615138596.

Adding to 1626220105 its reverse (5010226261), we get a palindrome (6636446366).

The spelling of 1626220105 in words is "one billion, six hundred twenty-six million, two hundred twenty thousand, one hundred five".