1223551413 has 42 divisors (see below), whose sum is σ = 2134058454. Its totient is φ = 699151824.

The previous prime is 1223551411. The next prime is 1223551429. The reversal of 1223551413 is 3141553221.

1223551413 is a `hidden beast` number, since 12 + 235 + 5 + 1 + 413 = 666.

It can be written as a sum of positive squares in only one way, i.e., 880486929 + 343064484 = 29673^2 + 18522^2 .

It is not a de Polignac number, because 1223551413 - 2¹ = 1223551411 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223551411) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 18595 + ... + 52847.

Almost surely, 2^1223551413 is an apocalyptic number.

It is an amenable number.

1223551413 is a deficient number, since it is larger than the sum of its proper divisors (910507041).

1223551413 is an frugal number, since it uses more digits than its factorization.

1223551413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34285 (or 34263 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 1223551413 is about 34979.2997785833. The cubic root of 1223551413 is about 1069.5655536772.

The spelling of 1223551413 in words is "one billion, two hundred twenty-three million, five hundred fifty-one thousand, four hundred thirteen".