374809549 has 2 divisors, whose sum is σ = 374809550. Its totient is φ = 374809548.

The previous prime is 374809511. The next prime is 374809619. The reversal of 374809549 is 945908473.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 302133924 + 72675625 = 17382^2 + 8525^2 .

It is a cyclic number.

It is not a de Polignac number, because 374809549 - 2⁹ = 374809037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (374809849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 187404774 + 187404775.

It is an arithmetic number, because the mean of its divisors is an integer number (187404775).

Almost surely, 2^374809549 is an apocalyptic number.

It is an amenable number.

374809549 is a deficient number, since it is larger than the sum of its proper divisors (1).

374809549 is an equidigital number, since it uses as much as digits as its factorization.

374809549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The square root of 374809549 is about 19359.9986828512. The cubic root of 374809549 is about 721.0026854265.

The spelling of 374809549 in words is "three hundred seventy-four million, eight hundred nine thousand, five hundred forty-nine".