890934188201 has 4 divisors (see below), whose sum is σ = 894400858452. Its totient is φ = 887467517952.

The previous prime is 890934188189. The next prime is 890934188239. The reversal of 890934188201 is 102881439098.

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 439968216601 + 450965971600 = 663301^2 + 671540^2 .

It is a cyclic number.

It is not a de Polignac number, because 890934188201 - 2²² = 890929993897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (890934188101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1733334740 + ... + 1733335253.

It is an arithmetic number, because the mean of its divisors is an integer number (223600214613).

Almost surely, 2^890934188201 is an apocalyptic number.

It is an amenable number.

890934188201 is a deficient number, since it is larger than the sum of its proper divisors (3466670251).

890934188201 is a wasteful number, since it uses less digits than its factorization.

890934188201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3466670250.

The product of its (nonzero) digits is 995328, while the sum is 53.

The spelling of 890934188201 in words is "eight hundred ninety billion, nine hundred thirty-four million, one hundred eighty-eight thousand, two hundred one".