1223138064 has 40 divisors (see below), whose sum is σ = 3206942560. Its totient is φ = 401626368.

The previous prime is 1223138057. The next prime is 1223138069. The reversal of 1223138064 is 4608313221.

It is not an unprimeable number, because it can be changed into a prime (1223138069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186949 + ... + 193380.

It is an arithmetic number, because the mean of its divisors is an integer number (80173564).

Almost surely, 2^1223138064 is an apocalyptic number.

It is an amenable number.

1223138064 is an abundant number, since it is smaller than the sum of its proper divisors (1983804496).

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

1223138064 is a wasteful number, since it uses less digits than its factorization.

1223138064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380407 (or 380401 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 1223138064 is about 34973.3907992920. The cubic root of 1223138064 is about 1069.4450973178.

The spelling of 1223138064 in words is "one billion, two hundred twenty-three million, one hundred thirty-eight thousand, sixty-four".