1226023165 has 16 divisors (see below), whose sum is σ = 1615996800. Its totient is φ = 888795072.

The previous prime is 1226023163. The next prime is 1226023193. The reversal of 1226023165 is 5613206221.

It is not a de Polignac number, because 1226023165 - 2¹ = 1226023163 is a prime.

It is a super-2 number, since 2×1226023165² = 3006265602233234450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226023163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 278370 + ... + 282739.

It is an arithmetic number, because the mean of its divisors is an integer number (100999800).

Almost surely, 2^1226023165 is an apocalyptic number.

It is an amenable number.

1226023165 is a deficient number, since it is larger than the sum of its proper divisors (389973635).

1226023165 is a wasteful number, since it uses less digits than its factorization.

1226023165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561156.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1226023165 is about 35014.6135920418. The cubic root of 1226023165 is about 1070.2852952817.

Adding to 1226023165 its reverse (5613206221), we get a palindrome (6839229386).

The spelling of 1226023165 in words is "one billion, two hundred twenty-six million, twenty-three thousand, one hundred sixty-five".