1226371161 has 8 divisors (see below), whose sum is σ = 1640940640. Its totient is φ = 814691232.

The previous prime is 1226371121. The next prime is 1226371163. The reversal of 1226371161 is 1611736221.

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

It is not a de Polignac number, because 1226371161 - 2¹⁹ = 1225846873 is a prime.

It is a super-3 number, since 3×1226371161³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1226371163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 721396 + ... + 723093.

It is an arithmetic number, because the mean of its divisors is an integer number (205117580).

Almost surely, 2^1226371161 is an apocalyptic number.

It is an amenable number.

1226371161 is a deficient number, since it is larger than the sum of its proper divisors (414569479).

1226371161 is a wasteful number, since it uses less digits than its factorization.

1226371161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444775.

The product of its digits is 3024, while the sum is 30.

The square root of 1226371161 is about 35019.5825360612. The cubic root of 1226371161 is about 1070.3865494228.

The spelling of 1226371161 in words is "one billion, two hundred twenty-six million, three hundred seventy-one thousand, one hundred sixty-one".