1774329149 has 2 divisors, whose sum is σ = 1774329150. Its totient is φ = 1774329148.

The previous prime is 1774329133. The next prime is 1774329157. The reversal of 1774329149 is 9419234771.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1773925924 + 403225 = 42118^2 + 635^2 .

It is a cyclic number.

It is not a de Polignac number, because 1774329149 - 2⁴ = 1774329133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1774329119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 887164574 + 887164575.

It is an arithmetic number, because the mean of its divisors is an integer number (887164575).

Almost surely, 2^1774329149 is an apocalyptic number.

It is an amenable number.

1774329149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1774329149 is an equidigital number, since it uses as much as digits as its factorization.

1774329149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 47.

The square root of 1774329149 is about 42122.7865768636. The cubic root of 1774329149 is about 1210.6298997022.

The spelling of 1774329149 in words is "one billion, seven hundred seventy-four million, three hundred twenty-nine thousand, one hundred forty-nine".