1634349543 has 16 divisors (see below), whose sum is σ = 2367820800. Its totient is φ = 998922240.

The previous prime is 1634349539. The next prime is 1634349569. The reversal of 1634349543 is 3459434361.

It is not a de Polignac number, because 1634349543 - 2² = 1634349539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1634349495 and 1634349504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1634349523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 460698 + ... + 464231.

It is an arithmetic number, because the mean of its divisors is an integer number (147988800).

Almost surely, 2^1634349543 is an apocalyptic number.

1634349543 is a deficient number, since it is larger than the sum of its proper divisors (733471257).

1634349543 is a wasteful number, since it uses less digits than its factorization.

1634349543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924982.

The product of its digits is 466560, while the sum is 42.

The square root of 1634349543 is about 40427.0892224508. The cubic root of 1634349543 is about 1177.9177927918.

The spelling of 1634349543 in words is "one billion, six hundred thirty-four million, three hundred forty-nine thousand, five hundred forty-three".