1634671954043 has 4 divisors (see below), whose sum is σ = 1647543386880. Its totient is φ = 1621800521208.

The previous prime is 1634671954033. The next prime is 1634671954049. The reversal of 1634671954043 is 3404591764361.

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

It is a cyclic number.

It is not a de Polignac number, because 1634671954043 - 2¹² = 1634671949947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1634671954049) 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, 6435716228 + ... + 6435716481.

It is an arithmetic number, because the mean of its divisors is an integer number (411885846720).

Almost surely, 2^{1634671954043} is an apocalyptic number.

1634671954043 is a deficient number, since it is larger than the sum of its proper divisors (12871432837).

1634671954043 is a wasteful number, since it uses less digits than its factorization.

1634671954043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12871432836.

The product of its (nonzero) digits is 6531840, while the sum is 53.

The spelling of 1634671954043 in words is "one trillion, six hundred thirty-four billion, six hundred seventy-one million, nine hundred fifty-four thousand, forty-three".