1226891741 has 2 divisors, whose sum is σ = 1226891742. Its totient is φ = 1226891740.

The previous prime is 1226891711. The next prime is 1226891759. The reversal of 1226891741 is 1471986221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 680688100 + 546203641 = 26090^2 + 23371^2 .

It is a cyclic number.

It is not a de Polignac number, because 1226891741 - 2¹⁸ = 1226629597 is a prime.

It is a super-2 number, since 2×1226891741² = 3010526688268022162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1226891711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613445870 + 613445871.

It is an arithmetic number, because the mean of its divisors is an integer number (613445871).

Almost surely, 2^1226891741 is an apocalyptic number.

It is an amenable number.

1226891741 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226891741 is an equidigital number, since it uses as much as digits as its factorization.

1226891741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 41.

The square root of 1226891741 is about 35027.0144459958. The cubic root of 1226891741 is about 1070.5379834589.

The spelling of 1226891741 in words is "one billion, two hundred twenty-six million, eight hundred ninety-one thousand, seven hundred forty-one".