1223426649 has 8 divisors (see below), whose sum is σ = 1702158912. Its totient is φ = 780156080.

The previous prime is 1223426623. The next prime is 1223426651. The reversal of 1223426649 is 9466243221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1223426649 - 2¹⁵ = 1223393881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1223426609) 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, 8865342 + ... + 8865479.

It is an arithmetic number, because the mean of its divisors is an integer number (212769864).

Almost surely, 2^1223426649 is an apocalyptic number.

It is an amenable number.

1223426649 is a deficient number, since it is larger than the sum of its proper divisors (478732263).

1223426649 is a wasteful number, since it uses less digits than its factorization.

1223426649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17730847.

The product of its digits is 124416, while the sum is 39.

The square root of 1223426649 is about 34977.5163354976. The cubic root of 1223426649 is about 1069.5291983563.

It can be divided in two parts, 12234 and 26649, that added together give a palindrome (38883).

The spelling of 1223426649 in words is "one billion, two hundred twenty-three million, four hundred twenty-six thousand, six hundred forty-nine".