1451226169 has 2 divisors, whose sum is σ = 1451226170. Its totient is φ = 1451226168.

The previous prime is 1451226163. The next prime is 1451226187. The reversal of 1451226169 is 9616221541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 800210944 + 651015225 = 28288^2 + 25515^2 .

It is an emirp because it is prime and its reverse (9616221541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1451226169 - 2¹⁷ = 1451095097 is a prime.

It is a super-2 number, since 2×1451226169² = 4212114787180833122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1451226163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 725613084 + 725613085.

It is an arithmetic number, because the mean of its divisors is an integer number (725613085).

Almost surely, 2^1451226169 is an apocalyptic number.

It is an amenable number.

1451226169 is a deficient number, since it is larger than the sum of its proper divisors (1).

1451226169 is an equidigital number, since it uses as much as digits as its factorization.

1451226169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 37.

The square root of 1451226169 is about 38094.9625147473. The cubic root of 1451226169 is about 1132.1701499471.

The spelling of 1451226169 in words is "one billion, four hundred fifty-one million, two hundred twenty-six thousand, one hundred sixty-nine".