1626166563 has 8 divisors (see below), whose sum is σ = 2477968128. Its totient is φ = 929238024.

The previous prime is 1626166543. The next prime is 1626166567. The reversal of 1626166563 is 3656616261.

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

It is not a de Polignac number, because 1626166563 - 2⁶ = 1626166499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1626166567) 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, 38718231 + ... + 38718272.

It is an arithmetic number, because the mean of its divisors is an integer number (309746016).

Almost surely, 2^1626166563 is an apocalyptic number.

1626166563 is a deficient number, since it is larger than the sum of its proper divisors (851801565).

1626166563 is an equidigital number, since it uses as much as digits as its factorization.

1626166563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77436513.

The product of its digits is 233280, while the sum is 42.

The square root of 1626166563 is about 40325.7555787861. The cubic root of 1626166563 is about 1175.9486078530.

The spelling of 1626166563 in words is "one billion, six hundred twenty-six million, one hundred sixty-six thousand, five hundred sixty-three".