163561026 has 32 divisors (see below), whose sum is σ = 332765568. Its totient is φ = 53585280.

The previous prime is 163561019. The next prime is 163561033. The reversal of 163561026 is 620165361.

It is an interprime number because it is at equal distance from previous prime (163561019) and next prime (163561033).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 163560984 and 163561002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183955 + ... + 184841.

It is an arithmetic number, because the mean of its divisors is an integer number (10398924).

Almost surely, 2^163561026 is an apocalyptic number.

163561026 is an abundant number, since it is smaller than the sum of its proper divisors (169204542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163561026 is a wasteful number, since it uses less digits than its factorization.

163561026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 163561026 is about 12789.0979353510. The cubic root of 163561026 is about 546.8815543421.

The spelling of 163561026 in words is "one hundred sixty-three million, five hundred sixty-one thousand, twenty-six".