1634213194087 has 4 divisors (see below), whose sum is σ = 1705265941680. Its totient is φ = 1563160446496.

The previous prime is 1634213194069. The next prime is 1634213194109. The reversal of 1634213194087 is 7804913124361.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1634213194087 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1634213194087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1634213194027) 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, 35526373762 + ... + 35526373807.

It is an arithmetic number, because the mean of its divisors is an integer number (426316485420).

Almost surely, 2^{1634213194087} is an apocalyptic number.

1634213194087 is a deficient number, since it is larger than the sum of its proper divisors (71052747593).

1634213194087 is an equidigital number, since it uses as much as digits as its factorization.

1634213194087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71052747592.

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 1634213194087 in words is "one trillion, six hundred thirty-four billion, two hundred thirteen million, one hundred ninety-four thousand, eighty-seven".