201899350693 has 4 divisors (see below), whose sum is σ = 201910556160. Its totient is φ = 201888145228.

The previous prime is 201899350669. The next prime is 201899350727. The reversal of 201899350693 is 396053998102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201899350693 - 2³³ = 193309416101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201899350603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5575663 + ... + 5611756.

It is an arithmetic number, because the mean of its divisors is an integer number (50477639040).

Almost surely, 2^201899350693 is an apocalyptic number.

It is an amenable number.

201899350693 is a deficient number, since it is larger than the sum of its proper divisors (11205467).

201899350693 is a wasteful number, since it uses less digits than its factorization.

201899350693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11205466.

The product of its (nonzero) digits is 3149280, while the sum is 55.

The spelling of 201899350693 in words is "two hundred one billion, eight hundred ninety-nine million, three hundred fifty thousand, six hundred ninety-three".