1226320465 has 8 divisors (see below), whose sum is σ = 1472708160. Its totient is φ = 980307312.

The previous prime is 1226320457. The next prime is 1226320471. The reversal of 1226320465 is 5640236221.

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 1226320465 - 2³ = 1226320457 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86379 + ... + 99568.

It is an arithmetic number, because the mean of its divisors is an integer number (184088520).

Almost surely, 2^1226320465 is an apocalyptic number.

It is an amenable number.

1226320465 is a deficient number, since it is larger than the sum of its proper divisors (246387695).

1226320465 is a wasteful number, since it uses less digits than its factorization.

1226320465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187271.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 1226320465 is about 35018.8587049892. The cubic root of 1226320465 is about 1070.3717999283.

Adding to 1226320465 its reverse (5640236221), we get a palindrome (6866556686).

The spelling of 1226320465 in words is "one billion, two hundred twenty-six million, three hundred twenty thousand, four hundred sixty-five".