374802809 has 2 divisors, whose sum is σ = 374802810. Its totient is φ = 374802808.

The previous prime is 374802773. The next prime is 374802817. The reversal of 374802809 is 908208473.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225840784 + 148962025 = 15028^2 + 12205^2 .

It is an emirp because it is prime and its reverse (908208473) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 374802809 - 2¹² = 374798713 is a prime.

It is not a weakly prime, because it can be changed into another prime (374802829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 187401404 + 187401405.

It is an arithmetic number, because the mean of its divisors is an integer number (187401405).

Almost surely, 2^374802809 is an apocalyptic number.

It is an amenable number.

374802809 is a deficient number, since it is larger than the sum of its proper divisors (1).

374802809 is an equidigital number, since it uses as much as digits as its factorization.

374802809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 374802809 is about 19359.8246118089. The cubic root of 374802809 is about 720.9983635985.

The spelling of 374802809 in words is "three hundred seventy-four million, eight hundred two thousand, eight hundred nine".