1226741761 has 4 divisors (see below), whose sum is σ = 1401990592. Its totient is φ = 1051492932.

The previous prime is 1226741729. The next prime is 1226741773. The reversal of 1226741761 is 1671476221.

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.

It is not a de Polignac number, because 1226741761 - 2⁵ = 1226741729 is a prime.

It is a super-2 number, since 2×1226741761² = 3009790696362762242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1226741761.

It is not an unprimeable number, because it can be changed into a prime (1226741561) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 87624405 + ... + 87624418.

It is an arithmetic number, because the mean of its divisors is an integer number (350497648).

Almost surely, 2^1226741761 is an apocalyptic number.

It is an amenable number.

1226741761 is a deficient number, since it is larger than the sum of its proper divisors (175248831).

1226741761 is an equidigital number, since it uses as much as digits as its factorization.

1226741761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175248830.

The product of its digits is 28224, while the sum is 37.

The square root of 1226741761 is about 35024.8734615844. The cubic root of 1226741761 is about 1070.4943594443.

The spelling of 1226741761 in words is "one billion, two hundred twenty-six million, seven hundred forty-one thousand, seven hundred sixty-one".