1223955562 has 16 divisors (see below), whose sum is σ = 1944767880. Its totient is φ = 575730688.

The previous prime is 1223955541. The next prime is 1223955587. The reversal of 1223955562 is 2655593221.

It can be written as a sum of positive squares in 4 ways, for example, as 634485721 + 589469841 = 25189^2 + 24279^2 .

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 in 7 ways as a sum of consecutive naturals, for example, 90114 + ... + 102802.

Almost surely, 2^1223955562 is an apocalyptic number.

1223955562 is a deficient number, since it is larger than the sum of its proper divisors (720812318).

1223955562 is a wasteful number, since it uses less digits than its factorization.

1223955562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15545.

The product of its digits is 162000, while the sum is 40.

The square root of 1223955562 is about 34985.0762754635. The cubic root of 1223955562 is about 1069.6833027857.

The spelling of 1223955562 in words is "one billion, two hundred twenty-three million, nine hundred fifty-five thousand, five hundred sixty-two".