1634407673 has 2 divisors, whose sum is σ = 1634407674. Its totient is φ = 1634407672.

The previous prime is 1634407661. The next prime is 1634407679. The reversal of 1634407673 is 3767044361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 845471929 + 788935744 = 29077^2 + 28088^2 .

It is an emirp because it is prime and its reverse (3767044361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1634407673 - 2⁶ = 1634407609 is a prime.

It is a super-2 number, since 2×1634407673² = 5342576883122549858, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1634407673.

It is not a weakly prime, because it can be changed into another prime (1634407679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 817203836 + 817203837.

It is an arithmetic number, because the mean of its divisors is an integer number (817203837).

Almost surely, 2^1634407673 is an apocalyptic number.

It is an amenable number.

1634407673 is a deficient number, since it is larger than the sum of its proper divisors (1).

1634407673 is an equidigital number, since it uses as much as digits as its factorization.

1634407673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 41.

The square root of 1634407673 is about 40427.8081646779. The cubic root of 1634407673 is about 1177.9317578888.

The spelling of 1634407673 in words is "one billion, six hundred thirty-four million, four hundred seven thousand, six hundred seventy-three".