1223613985 has 16 divisors (see below), whose sum is σ = 1603405440. Its totient is φ = 889021440.

The previous prime is 1223613973. The next prime is 1223613991. The reversal of 1223613985 is 5893163221.

It is not a de Polignac number, because 1223613985 - 2⁵ = 1223613953 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48001 + ... + 68929.

It is an arithmetic number, because the mean of its divisors is an integer number (100212840).

Almost surely, 2^1223613985 is an apocalyptic number.

It is an amenable number.

1223613985 is a deficient number, since it is larger than the sum of its proper divisors (379791455).

1223613985 is a wasteful number, since it uses less digits than its factorization.

1223613985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22008.

The product of its digits is 77760, while the sum is 40.

The square root of 1223613985 is about 34980.1941818510. The cubic root of 1223613985 is about 1069.5837857717.

The spelling of 1223613985 in words is "one billion, two hundred twenty-three million, six hundred thirteen thousand, nine hundred eighty-five".