1220179875 has 16 divisors (see below), whose sum is σ = 2030379936. Its totient is φ = 650762400.

The previous prime is 1220179853. The next prime is 1220179907. The reversal of 1220179875 is 5789710221.

It is not a de Polignac number, because 1220179875 - 2⁸ = 1220179619 is a prime.

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, 1626532 + ... + 1627281.

It is an arithmetic number, because the mean of its divisors is an integer number (126898746).

Almost surely, 2^1220179875 is an apocalyptic number.

1220179875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1220179875 is a deficient number, since it is larger than the sum of its proper divisors (810200061).

1220179875 is an equidigital number, since it uses as much as digits as its factorization.

1220179875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3253831 (or 3253821 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 42.

The square root of 1220179875 is about 34931.0732013776. The cubic root of 1220179875 is about 1068.5822417172.

The spelling of 1220179875 in words is "one billion, two hundred twenty million, one hundred seventy-nine thousand, eight hundred seventy-five".