1226723164 has 12 divisors (see below), whose sum is σ = 2147021800. Its totient is φ = 613288368.

The previous prime is 1226723143. The next prime is 1226723189. The reversal of 1226723164 is 4613276221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40102 + ... + 63730.

Almost surely, 2^1226723164 is an apocalyptic number.

It is an amenable number.

1226723164 is a deficient number, since it is larger than the sum of its proper divisors (920298636).

1226723164 is a wasteful number, since it uses less digits than its factorization.

1226723164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36612 (or 36610 counting only the distinct ones).

The product of its digits is 24192, while the sum is 34.

The square root of 1226723164 is about 35024.6079778204. The cubic root of 1226723164 is about 1070.4889499699.

Adding to 1226723164 its reverse (4613276221), we get a palindrome (5839999385).

The spelling of 1226723164 in words is "one billion, two hundred twenty-six million, seven hundred twenty-three thousand, one hundred sixty-four".