201802002689 has 4 divisors (see below), whose sum is σ = 230630860224. Its totient is φ = 172973145156.

The previous prime is 201802002671. The next prime is 201802002739. The reversal of 201802002689 is 986200208102.

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 de Polignac number, because none of the positive numbers 2^k-201802002689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201802001689) 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, 14414428757 + ... + 14414428770.

It is an arithmetic number, because the mean of its divisors is an integer number (57657715056).

Almost surely, 2^201802002689 is an apocalyptic number.

It is an amenable number.

201802002689 is a deficient number, since it is larger than the sum of its proper divisors (28828857535).

201802002689 is an equidigital number, since it uses as much as digits as its factorization.

201802002689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28828857534.

The product of its (nonzero) digits is 27648, while the sum is 38.

The spelling of 201802002689 in words is "two hundred one billion, eight hundred two million, two thousand, six hundred eighty-nine".