1634043445 has 4 divisors (see below), whose sum is σ = 1960852140. Its totient is φ = 1307234752.

The previous prime is 1634043443. The next prime is 1634043557. The reversal of 1634043445 is 5443404361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 847857924 + 786185521 = 29118^2 + 28039^2 .

It is a cyclic number.

It is not a de Polignac number, because 1634043445 - 2¹ = 1634043443 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1634043445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1634043443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163404340 + ... + 163404349.

It is an arithmetic number, because the mean of its divisors is an integer number (490213035).

Almost surely, 2^1634043445 is an apocalyptic number.

It is an amenable number.

1634043445 is a deficient number, since it is larger than the sum of its proper divisors (326808695).

1634043445 is an equidigital number, since it uses as much as digits as its factorization.

1634043445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326808694.

The product of its (nonzero) digits is 69120, while the sum is 34.

The square root of 1634043445 is about 40423.3032420657. The cubic root of 1634043445 is about 1177.8442506307.

The spelling of 1634043445 in words is "one billion, six hundred thirty-four million, forty-three thousand, four hundred forty-five".