1220160146 has 4 divisors (see below), whose sum is σ = 1830240222. Its totient is φ = 610080072.

The previous prime is 1220160133. The next prime is 1220160169. The reversal of 1220160146 is 6410610221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6410610221 = 193 ⋅33215597.

It can be written as a sum of positive squares in only one way, i.e., 1145077921 + 75082225 = 33839^2 + 8665^2 .

It is a super-3 number, since 3×1220160146³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 305040035 + ... + 305040038.

Almost surely, 2^1220160146 is an apocalyptic number.

1220160146 is a deficient number, since it is larger than the sum of its proper divisors (610080076).

1220160146 is an equidigital number, since it uses as much as digits as its factorization.

1220160146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610080075.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1220160146 is about 34930.7908012401. The cubic root of 1220160146 is about 1068.5764824099.

Adding to 1220160146 its reverse (6410610221), we get a palindrome (7630770367).

The spelling of 1220160146 in words is "one billion, two hundred twenty million, one hundred sixty thousand, one hundred forty-six".