1226484581 has 4 divisors (see below), whose sum is σ = 1401696672. Its totient is φ = 1051272492.

The previous prime is 1226484569. The next prime is 1226484583. The reversal of 1226484581 is 1854846221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1854846221 = 271 ⋅6844451.

It is a cyclic number.

It is not a de Polignac number, because 1226484581 - 2¹⁴ = 1226468197 is a prime.

It is a super-2 number, since 2×1226484581² = 3008528854861491122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226484583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87606035 + ... + 87606048.

It is an arithmetic number, because the mean of its divisors is an integer number (350424168).

Almost surely, 2^1226484581 is an apocalyptic number.

It is an amenable number.

1226484581 is a deficient number, since it is larger than the sum of its proper divisors (175212091).

1226484581 is an equidigital number, since it uses as much as digits as its factorization.

1226484581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175212090.

The product of its digits is 122880, while the sum is 41.

The square root of 1226484581 is about 35021.2018782908. The cubic root of 1226484581 is about 1070.4195463664.

The spelling of 1226484581 in words is "one billion, two hundred twenty-six million, four hundred eighty-four thousand, five hundred eighty-one".