374543909 has 2 divisors, whose sum is σ = 374543910. Its totient is φ = 374543908.

The previous prime is 374543899. The next prime is 374543959. The reversal of 374543909 is 909345473.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 332332900 + 42211009 = 18230^2 + 6497^2 .

It is an emirp because it is prime and its reverse (909345473) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 374543909 - 2¹² = 374539813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 374543909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (374543959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 187271954 + 187271955.

It is an arithmetic number, because the mean of its divisors is an integer number (187271955).

Almost surely, 2^374543909 is an apocalyptic number.

It is an amenable number.

374543909 is a deficient number, since it is larger than the sum of its proper divisors (1).

374543909 is an equidigital number, since it uses as much as digits as its factorization.

374543909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 408240, while the sum is 44.

The square root of 374543909 is about 19353.1369291906. The cubic root of 374543909 is about 720.8323123051.

The spelling of 374543909 in words is "three hundred seventy-four million, five hundred forty-three thousand, nine hundred nine".