1223160816 has 40 divisors (see below), whose sum is σ = 3187809360. Its totient is φ = 404110336.

The previous prime is 1223160793. The next prime is 1223160839. The reversal of 1223160816 is 6180613221.

It is an interprime number because it is at equal distance from previous prime (1223160793) and next prime (1223160839).

It is a super-2 number, since 2×1223160816² = 2992244763595571712, which contains 22 as substring.

It is a congruent number.

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, 107331 + ... + 118178.

It is an arithmetic number, because the mean of its divisors is an integer number (79695234).

Almost surely, 2^1223160816 is an apocalyptic number.

1223160816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1223160816 is an abundant number, since it is smaller than the sum of its proper divisors (1964648544).

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

1223160816 is a wasteful number, since it uses less digits than its factorization.

1223160816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225633 (or 225627 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 1223160816 is about 34973.7160736459. The cubic root of 1223160816 is about 1069.4517283119.

The spelling of 1223160816 in words is "one billion, two hundred twenty-three million, one hundred sixty thousand, eight hundred sixteen".